53899240 has 16 divisors (see below), whose sum is σ = 121273380. Its totient is φ = 21559680.

The previous prime is 53899229. The next prime is 53899243. The reversal of 53899240 is 4299835.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51294244 + 2604996 = 7162^2 + 1614^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1347481 = 53899240 / (5 + 3 + 8 + 9 + 9 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 53899193 and 53899202.

It is not an unprimeable number, because it can be changed into a prime (53899243) 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, 673701 + ... + 673780.

Almost surely, 2^53899240 is an apocalyptic number.

It is an amenable number.

53899240 is an abundant number, since it is smaller than the sum of its proper divisors (67374140).

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

53899240 is a wasteful number, since it uses less digits than its factorization.

53899240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347492 (or 1347488 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 53899240 is about 7341.6101776109. The cubic root of 53899240 is about 377.7410766602.

The spelling of 53899240 in words is "fifty-three million, eight hundred ninety-nine thousand, two hundred forty".