55990045 has 8 divisors (see below), whose sum is σ = 67633920. Its totient is φ = 44494800.

The previous prime is 55990037. The next prime is 55990063. The reversal of 55990045 is 54009955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55990045 - 2³ = 55990037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55989986 and 55990013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36325 + ... + 37834.

It is an arithmetic number, because the mean of its divisors is an integer number (8454240).

Almost surely, 2^55990045 is an apocalyptic number.

It is an amenable number.

55990045 is a deficient number, since it is larger than the sum of its proper divisors (11643875).

55990045 is a wasteful number, since it uses less digits than its factorization.

55990045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74315.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 55990045 is about 7482.6495975690. The cubic root of 55990045 is about 382.5635646992.

The spelling of 55990045 in words is "fifty-five million, nine hundred ninety thousand, forty-five".