52457737 has 4 divisors (see below), whose sum is σ = 53737236. Its totient is φ = 51178240.

The previous prime is 52457719. The next prime is 52457759. The reversal of 52457737 is 73775425.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8620096 + 43837641 = 2936^2 + 6621^2 .

It is a cyclic number.

It is not a de Polignac number, because 52457737 - 2⁷ = 52457609 is a prime.

It is a super-2 number, since 2×52457737² = 5503628342322338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52457737.

It is not an unprimeable number, because it can be changed into a prime (52457707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639688 + ... + 639769.

It is an arithmetic number, because the mean of its divisors is an integer number (13434309).

Almost surely, 2^52457737 is an apocalyptic number.

It is an amenable number.

52457737 is a deficient number, since it is larger than the sum of its proper divisors (1279499).

52457737 is a wasteful number, since it uses less digits than its factorization.

52457737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279498.

The product of its digits is 205800, while the sum is 40.

The square root of 52457737 is about 7242.7713618476. The cubic root of 52457737 is about 374.3431154940.

The spelling of 52457737 in words is "fifty-two million, four hundred fifty-seven thousand, seven hundred thirty-seven".