55621527 has 16 divisors (see below), whose sum is σ = 80222688. Its totient is φ = 34076160.

The previous prime is 55621519. The next prime is 55621541. The reversal of 55621527 is 72512655.

It is not a de Polignac number, because 55621527 - 2³ = 55621519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55621427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6027 + ... + 12147.

It is an arithmetic number, because the mean of its divisors is an integer number (5013918).

Almost surely, 2^55621527 is an apocalyptic number.

55621527 is a deficient number, since it is larger than the sum of its proper divisors (24601161).

55621527 is a wasteful number, since it uses less digits than its factorization.

55621527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370.

The product of its digits is 21000, while the sum is 33.

The square root of 55621527 is about 7457.9841110048. The cubic root of 55621527 is about 381.7223913432.

The spelling of 55621527 in words is "fifty-five million, six hundred twenty-one thousand, five hundred twenty-seven".