55621335 has 32 divisors (see below), whose sum is σ = 110956032. Its totient is φ = 23114880.

The previous prime is 55621277. The next prime is 55621367. The reversal of 55621335 is 53312655.

It is not a de Polignac number, because 55621335 - 2¹² = 55617239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22924 + ... + 25233.

It is an arithmetic number, because the mean of its divisors is an integer number (3467376).

Almost surely, 2^55621335 is an apocalyptic number.

55621335 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55621335 is a deficient number, since it is larger than the sum of its proper divisors (55334697).

55621335 is a wasteful number, since it uses less digits than its factorization.

55621335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48183.

The product of its digits is 13500, while the sum is 30.

The square root of 55621335 is about 7457.9712388826. The cubic root of 55621335 is about 381.7219521201.

The spelling of 55621335 in words is "fifty-five million, six hundred twenty-one thousand, three hundred thirty-five".