157481905 has 32 divisors (see below), whose sum is σ = 221184000. Its totient is φ = 105416640.

The previous prime is 157481903. The next prime is 157481917. The reversal of 157481905 is 509184751.

It is a happy number.

It is not a de Polignac number, because 157481905 - 2¹ = 157481903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157481903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315346 + ... + 315844.

It is an arithmetic number, because the mean of its divisors is an integer number (6912000).

Almost surely, 2^157481905 is an apocalyptic number.

It is an amenable number.

157481905 is a deficient number, since it is larger than the sum of its proper divisors (63702095).

157481905 is a wasteful number, since it uses less digits than its factorization.

157481905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 157481905 is about 12549.1794552473. The cubic root of 157481905 is about 540.0204667597.

The spelling of 157481905 in words is "one hundred fifty-seven million, four hundred eighty-one thousand, nine hundred five".