55620075 has 24 divisors (see below), whose sum is σ = 105096448. Its totient is φ = 25426080.

The previous prime is 55620053. The next prime is 55620079. The reversal of 55620075 is 57002655.

It is not a de Polignac number, because 55620075 - 2⁷ = 55619947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55620079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52447 + ... + 53496.

Almost surely, 2^55620075 is an apocalyptic number.

55620075 is a deficient number, since it is larger than the sum of its proper divisors (49476373).

55620075 is a wasteful number, since it uses less digits than its factorization.

55620075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105963 (or 105958 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55620075 is about 7457.8867650294. The cubic root of 55620075 is about 381.7190696932.

The spelling of 55620075 in words is "fifty-five million, six hundred twenty thousand, seventy-five".