55139753 has 4 divisors (see below), whose sum is σ = 55176900. Its totient is φ = 55102608.

The previous prime is 55139743. The next prime is 55139779. The reversal of 55139753 is 35793155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35793155 = 5 ⋅7158631.

It can be written as a sum of positive squares in 2 ways, for example, as 11751184 + 43388569 = 3428^2 + 6587^2 .

It is a cyclic number.

It is not a de Polignac number, because 55139753 - 2⁴ = 55139737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55139723) 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, 16250 + ... + 19347.

It is an arithmetic number, because the mean of its divisors is an integer number (13794225).

Almost surely, 2^55139753 is an apocalyptic number.

It is an amenable number.

55139753 is a deficient number, since it is larger than the sum of its proper divisors (37147).

55139753 is a wasteful number, since it uses less digits than its factorization.

55139753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37146.

The product of its digits is 70875, while the sum is 38.

The square root of 55139753 is about 7425.6146546936. The cubic root of 55139753 is about 380.6170791050.

It can be divided in two parts, 551 and 39753, that added together give a palindrome (40304).

The spelling of 55139753 in words is "fifty-five million, one hundred thirty-nine thousand, seven hundred fifty-three".