52136406 has 32 divisors (see below), whose sum is σ = 132410880. Its totient is φ = 14896008.

The previous prime is 52136401. The next prime is 52136407. The reversal of 52136406 is 60463125.

52136406 is a `hidden beast` number, since 5 + 2 + 13 + 640 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52136406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52136401) 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, 68586 + ... + 69341.

It is an arithmetic number, because the mean of its divisors is an integer number (4137840).

Almost surely, 2^52136406 is an apocalyptic number.

52136406 is an abundant number, since it is smaller than the sum of its proper divisors (80274474).

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

52136406 is a wasteful number, since it uses less digits than its factorization.

52136406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137945 (or 137939 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 52136406 is about 7220.5544108469. The cubic root of 52136406 is about 373.5772005385.

The spelling of 52136406 in words is "fifty-two million, one hundred thirty-six thousand, four hundred six".