55372151 has 4 divisors (see below), whose sum is σ = 55994400. Its totient is φ = 54749904.

The previous prime is 55372123. The next prime is 55372171. The reversal of 55372151 is 15127355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15127355 = 5 ⋅3025471.

It is a cyclic number.

It is not a de Polignac number, because 55372151 - 2⁶ = 55372087 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 (55372171) 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, 310991 + ... + 311168.

It is an arithmetic number, because the mean of its divisors is an integer number (13998600).

Almost surely, 2^55372151 is an apocalyptic number.

55372151 is a deficient number, since it is larger than the sum of its proper divisors (622249).

55372151 is an equidigital number, since it uses as much as digits as its factorization.

55372151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622248.

The product of its digits is 5250, while the sum is 29.

The square root of 55372151 is about 7441.2466025526. The cubic root of 55372151 is about 381.1510596611.

The spelling of 55372151 in words is "fifty-five million, three hundred seventy-two thousand, one hundred fifty-one".