157152691 has 4 divisors (see below), whose sum is σ = 157188672. Its totient is φ = 157116712.

The previous prime is 157152689. The next prime is 157152731. The reversal of 157152691 is 196251751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196251751 = 4637 ⋅42323.

It is a cyclic number.

It is not a de Polignac number, because 157152691 - 2¹ = 157152689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157152691.

It is not an unprimeable number, because it can be changed into a prime (157152661) 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, 10360 + ... + 20533.

It is an arithmetic number, because the mean of its divisors is an integer number (39297168).

Almost surely, 2^157152691 is an apocalyptic number.

157152691 is a deficient number, since it is larger than the sum of its proper divisors (35981).

157152691 is an equidigital number, since it uses as much as digits as its factorization.

157152691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35980.

The product of its digits is 18900, while the sum is 37.

The square root of 157152691 is about 12536.0556396340. The cubic root of 157152691 is about 539.6439021719.

The spelling of 157152691 in words is "one hundred fifty-seven million, one hundred fifty-two thousand, six hundred ninety-one".