55283139 has 12 divisors (see below), whose sum is σ = 81553056. Its totient is φ = 36070992.

The previous prime is 55283131. The next prime is 55283147. The reversal of 55283139 is 93138255.

It is an interprime number because it is at equal distance from previous prime (55283131) and next prime (55283147).

It is not a de Polignac number, because 55283139 - 2³ = 55283131 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (55283131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64924 + ... + 65769.

It is an arithmetic number, because the mean of its divisors is an integer number (6796088).

Almost surely, 2^55283139 is an apocalyptic number.

55283139 is a deficient number, since it is larger than the sum of its proper divisors (26269917).

55283139 is a wasteful number, since it uses less digits than its factorization.

55283139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130746 (or 130743 counting only the distinct ones).

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

The square root of 55283139 is about 7435.2632098669. The cubic root of 55283139 is about 380.9467137746.

The spelling of 55283139 in words is "fifty-five million, two hundred eighty-three thousand, one hundred thirty-nine".