55722253 has 4 divisors (see below), whose sum is σ = 57643740. Its totient is φ = 53800768.

The previous prime is 55722241. The next prime is 55722263. The reversal of 55722253 is 35222755.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26853124 + 28869129 = 5182^2 + 5373^2 .

It is a cyclic number.

It is not a de Polignac number, because 55722253 - 2²¹ = 53625101 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 (55722203) 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, 960700 + ... + 960757.

It is an arithmetic number, because the mean of its divisors is an integer number (14410935).

Almost surely, 2^55722253 is an apocalyptic number.

It is an amenable number.

55722253 is a deficient number, since it is larger than the sum of its proper divisors (1921487).

55722253 is a wasteful number, since it uses less digits than its factorization.

55722253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921486.

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

The square root of 55722253 is about 7464.7339537320. The cubic root of 55722253 is about 381.9526749848.

The spelling of 55722253 in words is "fifty-five million, seven hundred twenty-two thousand, two hundred fifty-three".