161003475 has 18 divisors (see below), whose sum is σ = 288375516. Its totient is φ = 85868400.

The previous prime is 161003467. The next prime is 161003497. The reversal of 161003475 is 574300161.

161003475 is a `hidden beast` number, since 1 + 610 + 0 + 3 + 47 + 5 = 666.

It is not a de Polignac number, because 161003475 - 2³ = 161003467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 357561 + ... + 358010.

It is an arithmetic number, because the mean of its divisors is an integer number (16020862).

Almost surely, 2^161003475 is an apocalyptic number.

161003475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161003475 is a deficient number, since it is larger than the sum of its proper divisors (127372041).

161003475 is a wasteful number, since it uses less digits than its factorization.

161003475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715587 (or 715579 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 161003475 is about 12688.7144738937. The cubic root of 161003475 is about 544.0160964726.

The spelling of 161003475 in words is "one hundred sixty-one million, three thousand, four hundred seventy-five".