151220502 has 24 divisors (see below), whose sum is σ = 328872960. Its totient is φ = 50217840.

The previous prime is 151220497. The next prime is 151220507. The reversal of 151220502 is 205022151.

It is an interprime number because it is at equal distance from previous prime (151220497) and next prime (151220507).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151220507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10774 + ... + 20457.

It is an arithmetic number, because the mean of its divisors is an integer number (13703040).

Almost surely, 2^151220502 is an apocalyptic number.

151220502 is an abundant number, since it is smaller than the sum of its proper divisors (177652458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151220502 is a wasteful number, since it uses less digits than its factorization.

151220502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31508 (or 31505 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 151220502 is about 12297.1745535306. The cubic root of 151220502 is about 532.7664790682.

Adding to 151220502 its reverse (205022151), we get a palindrome (356242653).

The spelling of 151220502 in words is "one hundred fifty-one million, two hundred twenty thousand, five hundred two".