54691065 has 64 divisors (see below), whose sum is σ = 114266880. Its totient is φ = 24468480.

The previous prime is 54691061. The next prime is 54691093. The reversal of 54691065 is 56019645.

54691065 is a `hidden beast` number, since 546 + 9 + 106 + 5 = 666.

It is not a de Polignac number, because 54691065 - 2² = 54691061 is a prime.

It is a super-2 number, since 2×54691065² = 5982225181668450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54691061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17889 + ... + 20721.

It is an arithmetic number, because the mean of its divisors is an integer number (1785420).

Almost surely, 2^54691065 is an apocalyptic number.

54691065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54691065 is an abundant number, since it is smaller than the sum of its proper divisors (59575815).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54691065 is a wasteful number, since it uses less digits than its factorization.

54691065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2865 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 54691065 is about 7395.3407629399. The cubic root of 54691065 is about 379.5818692593.

The spelling of 54691065 in words is "fifty-four million, six hundred ninety-one thousand, sixty-five".