54870919 has 4 divisors (see below), whose sum is σ = 55110760. Its totient is φ = 54631080.

The previous prime is 54870913. The next prime is 54870971. The reversal of 54870919 is 91907845.

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 54870919 - 2²³ = 46482311 is a prime.

It is a super-2 number, since 2×54870919² = 6021635503809122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54870913) 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, 119577 + ... + 120034.

It is an arithmetic number, because the mean of its divisors is an integer number (13777690).

Almost surely, 2^54870919 is an apocalyptic number.

54870919 is a deficient number, since it is larger than the sum of its proper divisors (239841).

54870919 is a wasteful number, since it uses less digits than its factorization.

54870919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239840.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 54870919 is about 7407.4907357350. The cubic root of 54870919 is about 379.9975046004.

The spelling of 54870919 in words is "fifty-four million, eight hundred seventy thousand, nine hundred nineteen".