53408418 has 32 divisors (see below), whose sum is σ = 124384896. Its totient is φ = 14971008.

The previous prime is 53408371. The next prime is 53408419. The reversal of 53408418 is 81480435.

It is a super-2 number, since 2×53408418² = 5704918226525448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53408419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9771 + ... + 14222.

It is an arithmetic number, because the mean of its divisors is an integer number (3887028).

Almost surely, 2^53408418 is an apocalyptic number.

53408418 is an abundant number, since it is smaller than the sum of its proper divisors (70976478).

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

53408418 is a wasteful number, since it uses less digits than its factorization.

53408418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24058.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 53408418 is about 7308.1063210657. The cubic root of 53408418 is about 376.5909721635.

The spelling of 53408418 in words is "fifty-three million, four hundred eight thousand, four hundred eighteen".