55413251 has 4 divisors (see below), whose sum is σ = 58672872. Its totient is φ = 52153632.

The previous prime is 55413227. The next prime is 55413257. The reversal of 55413251 is 15231455.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55413251 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 55413251.

It is not an unprimeable number, because it can be changed into a prime (55413257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629785 + ... + 1629818.

It is an arithmetic number, because the mean of its divisors is an integer number (14668218).

Almost surely, 2^55413251 is an apocalyptic number.

55413251 is a deficient number, since it is larger than the sum of its proper divisors (3259621).

55413251 is a wasteful number, since it uses less digits than its factorization.

55413251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259620.

The product of its digits is 3000, while the sum is 26.

The square root of 55413251 is about 7444.0077243377. The cubic root of 55413251 is about 381.2453395112.

The spelling of 55413251 in words is "fifty-five million, four hundred thirteen thousand, two hundred fifty-one".