157682797 has 4 divisors (see below), whose sum is σ = 159156576. Its totient is φ = 156209020.

The previous prime is 157682783. The next prime is 157682821. The reversal of 157682797 is 797286751.

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, and also an emirpimes, since its reverse is a distinct semiprime: 797286751 = 16943 ⋅47057.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157682797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157682747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736729 + ... + 736942.

It is an arithmetic number, because the mean of its divisors is an integer number (39789144).

Almost surely, 2^157682797 is an apocalyptic number.

It is an amenable number.

157682797 is a deficient number, since it is larger than the sum of its proper divisors (1473779).

157682797 is a wasteful number, since it uses less digits than its factorization.

157682797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473778.

The product of its digits is 1481760, while the sum is 52.

The square root of 157682797 is about 12557.1810929046. The cubic root of 157682797 is about 540.2499951284.

The spelling of 157682797 in words is "one hundred fifty-seven million, six hundred eighty-two thousand, seven hundred ninety-seven".