52137645 has 16 divisors (see below), whose sum is σ = 95337600. Its totient is φ = 23834304.

The previous prime is 52137641. The next prime is 52137647. The reversal of 52137645 is 54673125.

It is not a de Polignac number, because 52137645 - 2² = 52137641 is a prime.

It is a super-3 number, since 3×52137645³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52137641) 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, 248170 + ... + 248379.

It is an arithmetic number, because the mean of its divisors is an integer number (5958600).

Almost surely, 2^52137645 is an apocalyptic number.

It is an amenable number.

52137645 is a deficient number, since it is larger than the sum of its proper divisors (43199955).

52137645 is a wasteful number, since it uses less digits than its factorization.

52137645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496564.

The product of its digits is 25200, while the sum is 33.

The square root of 52137645 is about 7220.6402070731. The cubic root of 52137645 is about 373.5801598173.

The spelling of 52137645 in words is "fifty-two million, one hundred thirty-seven thousand, six hundred forty-five".