55047253 has 4 divisors (see below), whose sum is σ = 55085760. Its totient is φ = 55008748.

The previous prime is 55047221. The next prime is 55047263. The reversal of 55047253 is 35274055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35274055 = 5 ⋅7054811.

It is a cyclic number.

It is not a de Polignac number, because 55047253 - 2⁵ = 55047221 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 (55047203) 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, 17023 + ... + 19996.

It is an arithmetic number, because the mean of its divisors is an integer number (13771440).

Almost surely, 2^55047253 is an apocalyptic number.

It is an amenable number.

55047253 is a deficient number, since it is larger than the sum of its proper divisors (38507).

55047253 is a wasteful number, since it uses less digits than its factorization.

55047253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38506.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55047253 is about 7419.3835997339. The cubic root of 55047253 is about 380.4041245453.

The spelling of 55047253 in words is "fifty-five million, forty-seven thousand, two hundred fifty-three".