53515845 has 24 divisors (see below), whose sum is σ = 94738176. Its totient is φ = 27933408.

The previous prime is 53515843. The next prime is 53515853. The reversal of 53515845 is 54851535.

It is a happy number.

It is not a de Polignac number, because 53515845 - 2¹ = 53515843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53515843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10537 + ... + 14766.

It is an arithmetic number, because the mean of its divisors is an integer number (3947424).

Almost surely, 2^53515845 is an apocalyptic number.

It is an amenable number.

53515845 is a deficient number, since it is larger than the sum of its proper divisors (41222331).

53515845 is a wasteful number, since it uses less digits than its factorization.

53515845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25361 (or 25358 counting only the distinct ones).

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

The square root of 53515845 is about 7315.4524808791. The cubic root of 53515845 is about 376.8432978292.

The spelling of 53515845 in words is "fifty-three million, five hundred fifteen thousand, eight hundred forty-five".