55134491 has 4 divisors (see below), whose sum is σ = 55889832. Its totient is φ = 54379152.

The previous prime is 55134439. The next prime is 55134517. The reversal of 55134491 is 19443155.

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 55134491 - 2¹⁰ = 55133467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55131491) 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, 377561 + ... + 377706.

It is an arithmetic number, because the mean of its divisors is an integer number (13972458).

Almost surely, 2^55134491 is an apocalyptic number.

55134491 is a deficient number, since it is larger than the sum of its proper divisors (755341).

55134491 is an equidigital number, since it uses as much as digits as its factorization.

55134491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755340.

The product of its digits is 10800, while the sum is 32.

The square root of 55134491 is about 7425.2603321365. The cubic root of 55134491 is about 380.6049712598.

The spelling of 55134491 in words is "fifty-five million, one hundred thirty-four thousand, four hundred ninety-one".