55945045 has 32 divisors (see below), whose sum is σ = 77239008. Its totient is φ = 38535168.

The previous prime is 55945009. The next prime is 55945061. The reversal of 55945045 is 54054955.

It can be written as a sum of positive squares in 16 ways, for example, as 1096209 + 54848836 = 1047^2 + 7406^2 .

It is a cyclic number.

It is not a de Polignac number, because 55945045 - 2²³ = 47556437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55944995 and 55945013.

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, 217557 + ... + 217813.

It is an arithmetic number, because the mean of its divisors is an integer number (2413719).

Almost surely, 2^55945045 is an apocalyptic number.

It is an amenable number.

55945045 is a deficient number, since it is larger than the sum of its proper divisors (21293963).

55945045 is a wasteful number, since it uses less digits than its factorization.

55945045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 55945045 is about 7479.6420368892. The cubic root of 55945045 is about 382.4610466262.

The spelling of 55945045 in words is "fifty-five million, nine hundred forty-five thousand, forty-five".