55011501 has 16 divisors (see below), whose sum is σ = 81637120. Its totient is φ = 36612000.

The previous prime is 55011499. The next prime is 55011527. The reversal of 55011501 is 10511055.

55011501 is a `hidden beast` number, since 550 + 115 + 0 + 1 = 666.

It is not a de Polignac number, because 55011501 - 2¹ = 55011499 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 (55013501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18921 + ... + 21633.

It is an arithmetic number, because the mean of its divisors is an integer number (5102320).

Almost surely, 2^55011501 is an apocalyptic number.

It is an amenable number.

55011501 is a deficient number, since it is larger than the sum of its proper divisors (26625619).

55011501 is a wasteful number, since it uses less digits than its factorization.

55011501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3467 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 55011501 is about 7416.9738438261. The cubic root of 55011501 is about 380.3217519597.

Adding to 55011501 its reverse (10511055), we get a palindrome (65522556).

The spelling of 55011501 in words is "fifty-five million, eleven thousand, five hundred one".