52523691906 has 32 divisors (see below), whose sum is σ = 120089093760. Its totient is φ = 15002401536.

The previous prime is 52523691877. The next prime is 52523691907. The reversal of 52523691906 is 60919632525.

It is a happy number.

It is a super-2 number, since 2×52523691906² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52523691907) 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, 34551 + ... + 325946.

It is an arithmetic number, because the mean of its divisors is an integer number (3752784180).

Almost surely, 2^52523691906 is an apocalyptic number.

52523691906 is an abundant number, since it is smaller than the sum of its proper divisors (67565401854).

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

52523691906 is a wasteful number, since it uses less digits than its factorization.

52523691906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363978.

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 52523691906 in words is "fifty-two billion, five hundred twenty-three million, six hundred ninety-one thousand, nine hundred six".