55066137 has 32 divisors (see below), whose sum is σ = 87220224. Its totient is φ = 30240000.

The previous prime is 55066133. The next prime is 55066139. The reversal of 55066137 is 73166055.

It is not a de Polignac number, because 55066137 - 2² = 55066133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55066098 and 55066107.

It is not an unprimeable number, because it can be changed into a prime (55066133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163233 + ... + 163569.

It is an arithmetic number, because the mean of its divisors is an integer number (2725632).

Almost surely, 2^55066137 is an apocalyptic number.

It is an amenable number.

55066137 is a deficient number, since it is larger than the sum of its proper divisors (32154087).

55066137 is a wasteful number, since it uses less digits than its factorization.

55066137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 55066137 is about 7420.6561030680. The cubic root of 55066137 is about 380.4476188755.

The spelling of 55066137 in words is "fifty-five million, sixty-six thousand, one hundred thirty-seven".