55615045 has 4 divisors (see below), whose sum is σ = 66738060. Its totient is φ = 44492032.

The previous prime is 55615037. The next prime is 55615051. The reversal of 55615045 is 54051655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44116164 + 11498881 = 6642^2 + 3391^2 .

It is a cyclic number.

It is not a de Polignac number, because 55615045 - 2³ = 55615037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55614998 and 55615016.

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, 5561500 + ... + 5561509.

It is an arithmetic number, because the mean of its divisors is an integer number (16684515).

Almost surely, 2^55615045 is an apocalyptic number.

It is an amenable number.

55615045 is a deficient number, since it is larger than the sum of its proper divisors (11123015).

55615045 is a wasteful number, since it uses less digits than its factorization.

55615045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123014.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 55615045 is about 7457.5495305093. The cubic root of 55615045 is about 381.7075624284.

The spelling of 55615045 in words is "fifty-five million, six hundred fifteen thousand, forty-five".