523151961 has 4 divisors (see below), whose sum is σ = 697535952. Its totient is φ = 348767972.

The previous prime is 523151929. The next prime is 523151987. The reversal of 523151961 is 169151325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523151961 - 2⁵ = 523151929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523150961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87191991 + ... + 87191996.

It is an arithmetic number, because the mean of its divisors is an integer number (174383988).

Almost surely, 2^523151961 is an apocalyptic number.

It is an amenable number.

523151961 is a deficient number, since it is larger than the sum of its proper divisors (174383991).

523151961 is a wasteful number, since it uses less digits than its factorization.

523151961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174383990.

The product of its digits is 8100, while the sum is 33.

The square root of 523151961 is about 22872.5154060501. The cubic root of 523151961 is about 805.7666453943.

The spelling of 523151961 in words is "five hundred twenty-three million, one hundred fifty-one thousand, nine hundred sixty-one".