157168537 has 4 divisors (see below), whose sum is σ = 157766400. Its totient is φ = 156570676.

The previous prime is 157168493. The next prime is 157168547. The reversal of 157168537 is 735861751.

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 157168537 - 2¹⁹ = 156644249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157168493 and 157168502.

It is not an unprimeable number, because it can be changed into a prime (157168547) 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, 298537 + ... + 299062.

It is an arithmetic number, because the mean of its divisors is an integer number (39441600).

Almost surely, 2^157168537 is an apocalyptic number.

It is an amenable number.

157168537 is a deficient number, since it is larger than the sum of its proper divisors (597863).

157168537 is an equidigital number, since it uses as much as digits as its factorization.

157168537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597862.

The product of its digits is 176400, while the sum is 43.

The square root of 157168537 is about 12536.6876406809. The cubic root of 157168537 is about 539.6620393306.

The spelling of 157168537 in words is "one hundred fifty-seven million, one hundred sixty-eight thousand, five hundred thirty-seven".