153171961 has 12 divisors (see below), whose sum is σ = 161244160. Its totient is φ = 145351440.

The previous prime is 153171943. The next prime is 153172001. The reversal of 153171961 is 169171351.

It is not a de Polignac number, because 153171961 - 2¹⁷ = 153040889 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153177961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86200 + ... + 87958.

Almost surely, 2^153171961 is an apocalyptic number.

It is an amenable number.

153171961 is a deficient number, since it is larger than the sum of its proper divisors (8072199).

153171961 is an equidigital number, since it uses as much as digits as its factorization.

153171961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896 (or 1843 counting only the distinct ones).

The product of its digits is 5670, while the sum is 34.

The square root of 153171961 is about 12376.2660362486. The cubic root of 153171961 is about 535.0484260471.

The spelling of 153171961 in words is "one hundred fifty-three million, one hundred seventy-one thousand, nine hundred sixty-one".