54813909 has 16 divisors (see below), whose sum is σ = 75535488. Its totient is φ = 35330112.

The previous prime is 54813907. The next prime is 54813911. The reversal of 54813909 is 90931845.

It is an interprime number because it is at equal distance from previous prime (54813907) and next prime (54813911).

It is not a de Polignac number, because 54813909 - 2¹ = 54813907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54813907) 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, 17059 + ... + 20015.

It is an arithmetic number, because the mean of its divisors is an integer number (4720968).

Almost surely, 2^54813909 is an apocalyptic number.

It is an amenable number.

54813909 is a deficient number, since it is larger than the sum of its proper divisors (20721579).

54813909 is a wasteful number, since it uses less digits than its factorization.

54813909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 54813909 is about 7403.6416039676. The cubic root of 54813909 is about 379.8658552362.

The spelling of 54813909 in words is "fifty-four million, eight hundred thirteen thousand, nine hundred nine".