55023137 has 4 divisors (see below), whose sum is σ = 59255700. Its totient is φ = 50790576.

The previous prime is 55023127. The next prime is 55023139. The reversal of 55023137 is 73132055.

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 22316176 + 32706961 = 4724^2 + 5719^2 .

It is a cyclic number.

It is not a de Polignac number, because 55023137 - 2¹⁰ = 55022113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55023139) 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, 2116262 + ... + 2116287.

It is an arithmetic number, because the mean of its divisors is an integer number (14813925).

Almost surely, 2^55023137 is an apocalyptic number.

It is an amenable number.

55023137 is a deficient number, since it is larger than the sum of its proper divisors (4232563).

55023137 is a wasteful number, since it uses less digits than its factorization.

55023137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232562.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 55023137 is about 7417.7582193005. The cubic root of 55023137 is about 380.3485652130.

The spelling of 55023137 in words is "fifty-five million, twenty-three thousand, one hundred thirty-seven".