55672661 has 8 divisors (see below), whose sum is σ = 60788448. Its totient is φ = 50566000.

The previous prime is 55672657. The next prime is 55672681. The reversal of 55672661 is 16627655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55672661 - 2² = 55672657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55672601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19931 + ... + 22551.

It is an arithmetic number, because the mean of its divisors is an integer number (7598556).

Almost surely, 2^55672661 is an apocalyptic number.

It is an amenable number.

55672661 is a deficient number, since it is larger than the sum of its proper divisors (5115787).

55672661 is a wasteful number, since it uses less digits than its factorization.

55672661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563.

The product of its digits is 75600, while the sum is 38.

The square root of 55672661 is about 7461.4114616472. The cubic root of 55672661 is about 381.8393305660.

It can be divided in two parts, 5567 and 2661, that added together give a palindrome (8228).

The spelling of 55672661 in words is "fifty-five million, six hundred seventy-two thousand, six hundred sixty-one".