52213745 has 8 divisors (see below), whose sum is σ = 63839016. Its totient is φ = 40982656.

The previous prime is 52213741. The next prime is 52213747. The reversal of 52213745 is 54731225.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25080064 + 27133681 = 5008^2 + 5209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52213745 - 2² = 52213741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52213741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98252 + ... + 98781.

It is an arithmetic number, because the mean of its divisors is an integer number (7979877).

Almost surely, 2^52213745 is an apocalyptic number.

It is an amenable number.

52213745 is a deficient number, since it is larger than the sum of its proper divisors (11625271).

52213745 is a wasteful number, since it uses less digits than its factorization.

52213745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197091.

The product of its digits is 8400, while the sum is 29.

The square root of 52213745 is about 7225.9079014336. The cubic root of 52213745 is about 373.7618304030.

The spelling of 52213745 in words is "fifty-two million, two hundred thirteen thousand, seven hundred forty-five".