55531355 has 16 divisors (see below), whose sum is σ = 73029600. Its totient is φ = 40200960.

The previous prime is 55531351. The next prime is 55531373. The reversal of 55531355 is 55313555.

It is not a de Polignac number, because 55531355 - 2² = 55531351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55531351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10391 + ... + 14799.

It is an arithmetic number, because the mean of its divisors is an integer number (4564350).

Almost surely, 2^55531355 is an apocalyptic number.

55531355 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55531355 is a deficient number, since it is larger than the sum of its proper divisors (17498245).

55531355 is a wasteful number, since it uses less digits than its factorization.

55531355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654.

The product of its digits is 28125, while the sum is 32.

The square root of 55531355 is about 7451.9363255465. The cubic root of 55531355 is about 381.5160006962.

The spelling of 55531355 in words is "fifty-five million, five hundred thirty-one thousand, three hundred fifty-five".