55045597 has 4 divisors (see below), whose sum is σ = 55076860. Its totient is φ = 55014336.

The previous prime is 55045591. The next prime is 55045619. The reversal of 55045597 is 79554055.

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 6895876 + 48149721 = 2626^2 + 6939^2 .

It is a cyclic number.

It is not a de Polignac number, because 55045597 - 2¹⁹ = 54521309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55045591) 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, 12822 + ... + 16567.

It is an arithmetic number, because the mean of its divisors is an integer number (13769215).

Almost surely, 2^55045597 is an apocalyptic number.

It is an amenable number.

55045597 is a deficient number, since it is larger than the sum of its proper divisors (31263).

55045597 is a wasteful number, since it uses less digits than its factorization.

55045597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31262.

The product of its (nonzero) digits is 157500, while the sum is 40.

The square root of 55045597 is about 7419.2719993272. The cubic root of 55045597 is about 380.4003099102.

The spelling of 55045597 in words is "fifty-five million, forty-five thousand, five hundred ninety-seven".