55673231 has 4 divisors (see below), whose sum is σ = 56435952. Its totient is φ = 54910512.

The previous prime is 55673227. The next prime is 55673237. The reversal of 55673231 is 13237655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13237655 = 5 ⋅2647531.

It is a cyclic number.

It is not a de Polignac number, because 55673231 - 2² = 55673227 is a prime.

It is a super-2 number, since 2×55673231² = 6199017299958722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55673237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381251 + ... + 381396.

It is an arithmetic number, because the mean of its divisors is an integer number (14108988).

Almost surely, 2^55673231 is an apocalyptic number.

55673231 is a deficient number, since it is larger than the sum of its proper divisors (762721).

55673231 is an equidigital number, since it uses as much as digits as its factorization.

55673231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762720.

The product of its digits is 18900, while the sum is 32.

The square root of 55673231 is about 7461.4496580758. The cubic root of 55673231 is about 381.8406337052.

The spelling of 55673231 in words is "fifty-five million, six hundred seventy-three thousand, two hundred thirty-one".