54862139 has 4 divisors (see below), whose sum is σ = 57749640. Its totient is φ = 51974640.

The previous prime is 54862121. The next prime is 54862147. The reversal of 54862139 is 93126845.

It is a happy number.

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 54862139 - 2¹² = 54858043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54862169) 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, 1443722 + ... + 1443759.

It is an arithmetic number, because the mean of its divisors is an integer number (14437410).

Almost surely, 2^54862139 is an apocalyptic number.

54862139 is a deficient number, since it is larger than the sum of its proper divisors (2887501).

54862139 is a wasteful number, since it uses less digits than its factorization.

54862139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887500.

The product of its digits is 51840, while the sum is 38.

The square root of 54862139 is about 7406.8980686925. The cubic root of 54862139 is about 379.9772354784.

The spelling of 54862139 in words is "fifty-four million, eight hundred sixty-two thousand, one hundred thirty-nine".