53279740 has 24 divisors (see below), whose sum is σ = 113560272. Its totient is φ = 20993280.

The previous prime is 53279729. The next prime is 53279767. The reversal of 53279740 is 4797235.

It is a self number, because there is not a number n which added to its sum of digits gives 53279740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18541 + ... + 21220.

It is an arithmetic number, because the mean of its divisors is an integer number (4731678).

Almost surely, 2^53279740 is an apocalyptic number.

It is an amenable number.

53279740 is an abundant number, since it is smaller than the sum of its proper divisors (60280532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53279740 is a wasteful number, since it uses less digits than its factorization.

53279740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39837 (or 39835 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 53279740 is about 7299.2972264458. The cubic root of 53279740 is about 376.2882861523.

The spelling of 53279740 in words is "fifty-three million, two hundred seventy-nine thousand, seven hundred forty".