55787629 has 4 divisors (see below), whose sum is σ = 58723840. Its totient is φ = 52851420.

The previous prime is 55787623. The next prime is 55787647. The reversal of 55787629 is 92678755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55787629 - 2³ = 55787621 is a prime.

It is a super-2 number, since 2×55787629² = 6224519098883282, 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 (55787621) 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, 1468077 + ... + 1468114.

It is an arithmetic number, because the mean of its divisors is an integer number (14680960).

Almost surely, 2^55787629 is an apocalyptic number.

It is an amenable number.

55787629 is a deficient number, since it is larger than the sum of its proper divisors (2936211).

55787629 is a wasteful number, since it uses less digits than its factorization.

55787629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936210.

The product of its digits is 1058400, while the sum is 49.

The square root of 55787629 is about 7469.1116606997. Note that the first 3 decimals coincide. The cubic root of 55787629 is about 382.1019916256.

The spelling of 55787629 in words is "fifty-five million, seven hundred eighty-seven thousand, six hundred twenty-nine".