55610420 has 12 divisors (see below), whose sum is σ = 116781924. Its totient is φ = 22244160.

The previous prime is 55610407. The next prime is 55610453. The reversal of 55610420 is 2401655.

It can be written as a sum of positive squares in 2 ways, for example, as 25623844 + 29986576 = 5062^2 + 5476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390241 + ... + 1390280.

It is an arithmetic number, because the mean of its divisors is an integer number (9731827).

Almost surely, 2^55610420 is an apocalyptic number.

It is an amenable number.

55610420 is an abundant number, since it is smaller than the sum of its proper divisors (61171504).

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

55610420 is a wasteful number, since it uses less digits than its factorization.

55610420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780530 (or 2780528 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 55610420 is about 7457.2394356089. The cubic root of 55610420 is about 381.6969810805.

The spelling of 55610420 in words is "fifty-five million, six hundred ten thousand, four hundred twenty".