151212361 has 4 divisors (see below), whose sum is σ = 151758532. Its totient is φ = 150666192.

The previous prime is 151212359. The next prime is 151212371. The reversal of 151212361 is 163212151.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37896336 + 113316025 = 6156^2 + 10645^2 .

It is a cyclic number.

It is not a de Polignac number, because 151212361 - 2¹ = 151212359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151212371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272670 + ... + 273223.

It is an arithmetic number, because the mean of its divisors is an integer number (37939633).

Almost surely, 2^151212361 is an apocalyptic number.

It is an amenable number.

151212361 is a deficient number, since it is larger than the sum of its proper divisors (546171).

151212361 is an equidigital number, since it uses as much as digits as its factorization.

151212361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546170.

The product of its digits is 360, while the sum is 22.

The square root of 151212361 is about 12296.8435380792. The cubic root of 151212361 is about 532.7569183502.

The spelling of 151212361 in words is "one hundred fifty-one million, two hundred twelve thousand, three hundred sixty-one".