157104391 has 4 divisors (see below), whose sum is σ = 157684384. Its totient is φ = 156524400.

The previous prime is 157104359. The next prime is 157104443. The reversal of 157104391 is 193401751.

157104391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193401751 = 107 ⋅1807493.

It is a cyclic number.

It is not a de Polignac number, because 157104391 - 2⁵ = 157104359 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 (157104791) 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, 289590 + ... + 290131.

It is an arithmetic number, because the mean of its divisors is an integer number (39421096).

Almost surely, 2^157104391 is an apocalyptic number.

157104391 is a deficient number, since it is larger than the sum of its proper divisors (579993).

157104391 is an equidigital number, since it uses as much as digits as its factorization.

157104391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579992.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 157104391 is about 12534.1290483224. The cubic root of 157104391 is about 539.5886109961.

The spelling of 157104391 in words is "one hundred fifty-seven million, one hundred four thousand, three hundred ninety-one".