157730351 has 4 divisors (see below), whose sum is σ = 158075952. Its totient is φ = 157384752.

The previous prime is 157730347. The next prime is 157730383. The reversal of 157730351 is 153037751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157730351 - 2² = 157730347 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 (157730311) 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, 172115 + ... + 173028.

It is an arithmetic number, because the mean of its divisors is an integer number (39518988).

Almost surely, 2^157730351 is an apocalyptic number.

157730351 is a deficient number, since it is larger than the sum of its proper divisors (345601).

157730351 is an equidigital number, since it uses as much as digits as its factorization.

157730351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345600.

The product of its (nonzero) digits is 11025, while the sum is 32.

The square root of 157730351 is about 12559.0744483819. The cubic root of 157730351 is about 540.3042992261.

The spelling of 157730351 in words is "one hundred fifty-seven million, seven hundred thirty thousand, three hundred fifty-one".