52742665 has 4 divisors (see below), whose sum is σ = 63291204. Its totient is φ = 42194128.

The previous prime is 52742659. The next prime is 52742681. The reversal of 52742665 is 56624725.

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 11641744 + 41100921 = 3412^2 + 6411^2 .

It is a cyclic number.

It is not a de Polignac number, because 52742665 - 2⁵ = 52742633 is a prime.

It is a super-2 number, since 2×52742665² = 5563577422604450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5274262 + ... + 5274271.

It is an arithmetic number, because the mean of its divisors is an integer number (15822801).

Almost surely, 2^52742665 is an apocalyptic number.

It is an amenable number.

52742665 is a deficient number, since it is larger than the sum of its proper divisors (10548539).

52742665 is a wasteful number, since it uses less digits than its factorization.

52742665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10548538.

The product of its digits is 100800, while the sum is 37.

The square root of 52742665 is about 7262.4145433871. The cubic root of 52742665 is about 375.0196493408.

The spelling of 52742665 in words is "fifty-two million, seven hundred forty-two thousand, six hundred sixty-five".