52685387545 has 16 divisors (see below), whose sum is σ = 72739180800. Its totient is φ = 35884655424.

The previous prime is 52685387507. The next prime is 52685387549. The reversal of 52685387545 is 54578358625.

It is a cyclic number.

It is not a de Polignac number, because 52685387545 - 2²¹ = 52683290393 is a prime.

It is a super-2 number, since 2×52685387545² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52685387545.

It is not an unprimeable number, because it can be changed into a prime (52685387549) 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, 5046117 + ... + 5056546.

It is an arithmetic number, because the mean of its divisors is an integer number (4546198800).

Almost surely, 2^52685387545 is an apocalyptic number.

It is an amenable number.

52685387545 is a deficient number, since it is larger than the sum of its proper divisors (20053793255).

52685387545 is a wasteful number, since it uses less digits than its factorization.

52685387545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10102824.

The product of its digits is 40320000, while the sum is 58.

The spelling of 52685387545 in words is "fifty-two billion, six hundred eighty-five million, three hundred eighty-seven thousand, five hundred forty-five".