55253491 has 4 divisors (see below), whose sum is σ = 55377000. Its totient is φ = 55129984.

The previous prime is 55253489. The next prime is 55253503. The reversal of 55253491 is 19435255.

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 55253491 - 2¹ = 55253489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55253411) 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, 61081 + ... + 61978.

It is an arithmetic number, because the mean of its divisors is an integer number (13844250).

Almost surely, 2^55253491 is an apocalyptic number.

55253491 is a deficient number, since it is larger than the sum of its proper divisors (123509).

55253491 is a wasteful number, since it uses less digits than its factorization.

55253491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123508.

The product of its digits is 27000, while the sum is 34.

The square root of 55253491 is about 7433.2692000223. The cubic root of 55253491 is about 380.8786018210.

The spelling of 55253491 in words is "fifty-five million, two hundred fifty-three thousand, four hundred ninety-one".