157506861 has 8 divisors (see below), whose sum is σ = 210117600. Its totient is φ = 104950352.

The previous prime is 157506851. The next prime is 157506863. The reversal of 157506861 is 168605751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157506861 - 2⁷ = 157506733 is a prime.

It is a super-2 number, since 2×157506861² = 49616822524146642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157506863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6210 + ... + 18803.

It is an arithmetic number, because the mean of its divisors is an integer number (26264700).

Almost surely, 2^157506861 is an apocalyptic number.

It is an amenable number.

157506861 is a deficient number, since it is larger than the sum of its proper divisors (52610739).

157506861 is a wasteful number, since it uses less digits than its factorization.

157506861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27115.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 157506861 is about 12550.1737438173. The cubic root of 157506861 is about 540.0489907541.

The spelling of 157506861 in words is "one hundred fifty-seven million, five hundred six thousand, eight hundred sixty-one".