55531210 has 24 divisors (see below), whose sum is σ = 116276580. Its totient is φ = 19039104.

The previous prime is 55531207. The next prime is 55531211. The reversal of 55531210 is 1213555.

It can be written as a sum of positive squares in 2 ways, for example, as 55160329 + 370881 = 7427^2 + 609^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55531211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56175 + ... + 57154.

Almost surely, 2^55531210 is an apocalyptic number.

55531210 is an abundant number, since it is smaller than the sum of its proper divisors (60745370).

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

55531210 is a wasteful number, since it uses less digits than its factorization.

55531210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113350 (or 113343 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55531210 is about 7451.9265965252. The cubic root of 55531210 is about 381.5156686323.

Adding to 55531210 its reverse (1213555), we get a palindrome (56744765).

The spelling of 55531210 in words is "fifty-five million, five hundred thirty-one thousand, two hundred ten".