55192247 has 4 divisors (see below), whose sum is σ = 60209736. Its totient is φ = 50174760.

The previous prime is 55192223. The next prime is 55192309. The reversal of 55192247 is 74229155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55192247 - 2¹² = 55188151 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 (55194247) 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, 2508728 + ... + 2508749.

It is an arithmetic number, because the mean of its divisors is an integer number (15052434).

Almost surely, 2^55192247 is an apocalyptic number.

55192247 is a deficient number, since it is larger than the sum of its proper divisors (5017489).

55192247 is a wasteful number, since it uses less digits than its factorization.

55192247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017488.

The product of its digits is 25200, while the sum is 35.

The square root of 55192247 is about 7429.1484707199. The cubic root of 55192247 is about 380.7378254797.

The spelling of 55192247 in words is "fifty-five million, one hundred ninety-two thousand, two hundred forty-seven".