55712207 has 4 divisors (see below), whose sum is σ = 55734336. Its totient is φ = 55690080.

The previous prime is 55712197. The next prime is 55712227. The reversal of 55712207 is 70221755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70221755 = 5 ⋅14044351.

It is a cyclic number.

It is not a de Polignac number, because 55712207 - 2⁸ = 55711951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55712207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55712227) 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, 6719 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (13933584).

Almost surely, 2^55712207 is an apocalyptic number.

55712207 is a deficient number, since it is larger than the sum of its proper divisors (22129).

55712207 is a wasteful number, since it uses less digits than its factorization.

55712207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22128.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 55712207 is about 7464.0610260099. The cubic root of 55712207 is about 381.9297198997.

The spelling of 55712207 in words is "fifty-five million, seven hundred twelve thousand, two hundred seven".