55101291 has 32 divisors (see below), whose sum is σ = 88363008. Its totient is φ = 29877120.

The previous prime is 55101289. The next prime is 55101313. The reversal of 55101291 is 19210155.

It is not a de Polignac number, because 55101291 - 2¹ = 55101289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55111291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33705 + ... + 35301.

It is an arithmetic number, because the mean of its divisors is an integer number (2761344).

Almost surely, 2^55101291 is an apocalyptic number.

55101291 is a deficient number, since it is larger than the sum of its proper divisors (33261717).

55101291 is a wasteful number, since it uses less digits than its factorization.

55101291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 55101291 is about 7423.0243836323. The cubic root of 55101291 is about 380.5285603961.

The spelling of 55101291 in words is "fifty-five million, one hundred one thousand, two hundred ninety-one".