54401899 has 4 divisors (see below), whose sum is σ = 54437320. Its totient is φ = 54366480.

The previous prime is 54401861. The next prime is 54401947. The reversal of 54401899 is 99810445.

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 54401899 - 2¹³ = 54393707 is a prime.

It is a super-2 number, since 2×54401899² = 5919133229612402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54401839) 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, 15297 + ... + 18514.

It is an arithmetic number, because the mean of its divisors is an integer number (13609330).

Almost surely, 2^54401899 is an apocalyptic number.

54401899 is a deficient number, since it is larger than the sum of its proper divisors (35421).

54401899 is a wasteful number, since it uses less digits than its factorization.

54401899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35420.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 54401899 is about 7375.7642993794. The cubic root of 54401899 is about 378.9117037995.

The spelling of 54401899 in words is "fifty-four million, four hundred one thousand, eight hundred ninety-nine".