151215015 has 32 divisors (see below), whose sum is σ = 291064320. Its totient is φ = 65487744.

The previous prime is 151215013. The next prime is 151215037. The reversal of 151215015 is 510512151.

151215015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 151215015 - 2¹ = 151215013 is a prime.

It is a super-2 number, since 2×151215015² = 45731961522900450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 151214982 and 151215000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151215013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35904 + ... + 39893.

It is an arithmetic number, because the mean of its divisors is an integer number (9095760).

Almost surely, 2^151215015 is an apocalyptic number.

151215015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

151215015 is a deficient number, since it is larger than the sum of its proper divisors (139849305).

151215015 is a wasteful number, since it uses less digits than its factorization.

151215015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75831.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 151215015 is about 12296.9514514777. The cubic root of 151215015 is about 532.7600352219.

Adding to 151215015 its reverse (510512151), we get a palindrome (661727166).

The spelling of 151215015 in words is "one hundred fifty-one million, two hundred fifteen thousand, fifteen".