157501381 has 8 divisors (see below), whose sum is σ = 159685344. Its totient is φ = 155324400.

The previous prime is 157501373. The next prime is 157501387. The reversal of 157501381 is 183105751.

157501381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157501381 - 2³ = 157501373 is a prime.

It is a super-2 number, since 2×157501381² = 49613370033814322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157501387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56830 + ... + 59536.

It is an arithmetic number, because the mean of its divisors is an integer number (19960668).

Almost surely, 2^157501381 is an apocalyptic number.

It is an amenable number.

157501381 is a deficient number, since it is larger than the sum of its proper divisors (2183963).

157501381 is an equidigital number, since it uses as much as digits as its factorization.

157501381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 157501381 is about 12549.9554182475. The cubic root of 157501381 is about 540.0427275290.

The spelling of 157501381 in words is "one hundred fifty-seven million, five hundred one thousand, three hundred eighty-one".