161051475 has 24 divisors (see below), whose sum is σ = 286755952. Its totient is φ = 79286400.

The previous prime is 161051461. The next prime is 161051483. The reversal of 161051475 is 574150161.

It is not a de Polignac number, because 161051475 - 2⁷ = 161051347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81616 + ... + 83565.

Almost surely, 2^161051475 is an apocalyptic number.

161051475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161051475 is a deficient number, since it is larger than the sum of its proper divisors (125704477).

161051475 is a wasteful number, since it uses less digits than its factorization.

161051475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165207 (or 165202 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 161051475 is about 12690.6057775033. The cubic root of 161051475 is about 544.0701536455.

The spelling of 161051475 in words is "one hundred sixty-one million, fifty-one thousand, four hundred seventy-five".