55521546 has 16 divisors (see below), whose sum is σ = 111117504. Its totient is φ = 18494784.

The previous prime is 55521511. The next prime is 55521547. The reversal of 55521546 is 64512555.

It is not an unprimeable number, because it can be changed into a prime (55521547) 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, 13170 + ... + 16866.

It is an arithmetic number, because the mean of its divisors is an integer number (6944844).

Almost surely, 2^55521546 is an apocalyptic number.

55521546 is an abundant number, since it is smaller than the sum of its proper divisors (55595958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55521546 is a wasteful number, since it uses less digits than its factorization.

55521546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205.

The product of its digits is 30000, while the sum is 33.

The square root of 55521546 is about 7451.2781453922. The cubic root of 55521546 is about 381.4935358454.

The spelling of 55521546 in words is "fifty-five million, five hundred twenty-one thousand, five hundred forty-six".