53518545 has 12 divisors (see below), whose sum is σ = 92765556. Its totient is φ = 28543200.

The previous prime is 53518541. The next prime is 53518547. The reversal of 53518545 is 54581535.

It is a happy number.

53518545 is a `hidden beast` number, since 535 + 1 + 85 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13373649 + 40144896 = 3657^2 + 6336^2 .

It is not a de Polignac number, because 53518545 - 2² = 53518541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53518541) 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, 594606 + ... + 594695.

It is an arithmetic number, because the mean of its divisors is an integer number (7730463).

Almost surely, 2^53518545 is an apocalyptic number.

It is an amenable number.

53518545 is a deficient number, since it is larger than the sum of its proper divisors (39247011).

53518545 is a wasteful number, since it uses less digits than its factorization.

53518545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189312 (or 1189309 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 53518545 is about 7315.6370194263. The cubic root of 53518545 is about 376.8496352656.

The spelling of 53518545 in words is "fifty-three million, five hundred eighteen thousand, five hundred forty-five".