153281961 has 12 divisors (see below), whose sum is σ = 253036992. Its totient is φ = 87589656.

The previous prime is 153281929. The next prime is 153281963. The reversal of 153281961 is 169182351.

It is not a de Polignac number, because 153281961 - 2⁵ = 153281929 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (153281963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1216461 + ... + 1216586.

It is an arithmetic number, because the mean of its divisors is an integer number (21086416).

Almost surely, 2^153281961 is an apocalyptic number.

It is an amenable number.

153281961 is a deficient number, since it is larger than the sum of its proper divisors (99755031).

153281961 is a wasteful number, since it uses less digits than its factorization.

153281961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433060 (or 2433057 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 153281961 is about 12380.7092284731. The cubic root of 153281961 is about 535.1764765580.

The spelling of 153281961 in words is "one hundred fifty-three million, two hundred eighty-one thousand, nine hundred sixty-one".