55534645 has 4 divisors (see below), whose sum is σ = 66641580. Its totient is φ = 44427712.

The previous prime is 55534643. The next prime is 55534657. The reversal of 55534645 is 54643555.

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 23882769 + 31651876 = 4887^2 + 5626^2 .

It is a cyclic number.

It is not a de Polignac number, because 55534645 - 2¹ = 55534643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55534643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5553460 + ... + 5553469.

It is an arithmetic number, because the mean of its divisors is an integer number (16660395).

Almost surely, 2^55534645 is an apocalyptic number.

It is an amenable number.

55534645 is a deficient number, since it is larger than the sum of its proper divisors (11106935).

55534645 is a wasteful number, since it uses less digits than its factorization.

55534645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11106934.

The product of its digits is 180000, while the sum is 37.

The square root of 55534645 is about 7452.1570702717. The cubic root of 55534645 is about 381.5235349553.

The spelling of 55534645 in words is "fifty-five million, five hundred thirty-four thousand, six hundred forty-five".