157169961 has 12 divisors (see below), whose sum is σ = 244486788. Its totient is φ = 96719904.

The previous prime is 157169951. The next prime is 157170019. The reversal of 157169961 is 169961751.

157169961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 93489561 + 63680400 = 9669^2 + 7980^2 .

It is not a de Polignac number, because 157169961 - 2⁶ = 157169897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157169951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 671550 + ... + 671783.

It is an arithmetic number, because the mean of its divisors is an integer number (20373899).

Almost surely, 2^157169961 is an apocalyptic number.

It is an amenable number.

157169961 is a deficient number, since it is larger than the sum of its proper divisors (87316827).

157169961 is a wasteful number, since it uses less digits than its factorization.

157169961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343352 (or 1343349 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 157169961 is about 12536.7444338632. The cubic root of 157169961 is about 539.6636691657.

The spelling of 157169961 in words is "one hundred fifty-seven million, one hundred sixty-nine thousand, nine hundred sixty-one".