157781402 has 16 divisors (see below), whose sum is σ = 246607200. Its totient is φ = 75618480.

The previous prime is 157781387. The next prime is 157781417. The reversal of 157781402 is 204187751.

It is an interprime number because it is at equal distance from previous prime (157781387) and next prime (157781417).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724 + ... + 17847.

It is an arithmetic number, because the mean of its divisors is an integer number (15412950).

Almost surely, 2^157781402 is an apocalyptic number.

157781402 is a deficient number, since it is larger than the sum of its proper divisors (88825798).

157781402 is a wasteful number, since it uses less digits than its factorization.

157781402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19741.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 157781402 is about 12561.1067187569. The cubic root of 157781402 is about 540.3625845620.

The spelling of 157781402 in words is "one hundred fifty-seven million, seven hundred eighty-one thousand, four hundred two".