52215701 has 4 divisors (see below), whose sum is σ = 52401804. Its totient is φ = 52029600.

The previous prime is 52215671. The next prime is 52215707. The reversal of 52215701 is 10751225.

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 35117476 + 17098225 = 5926^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 52215701 - 2¹⁸ = 51953557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215707) 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, 92630 + ... + 93191.

It is an arithmetic number, because the mean of its divisors is an integer number (13100451).

Almost surely, 2^52215701 is an apocalyptic number.

It is an amenable number.

52215701 is a deficient number, since it is larger than the sum of its proper divisors (186103).

52215701 is a wasteful number, since it uses less digits than its factorization.

52215701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186102.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 52215701 is about 7226.0432464801. The cubic root of 52215701 is about 373.7664975585.

Adding to 52215701 its reverse (10751225), we get a palindrome (62966926).

The spelling of 52215701 in words is "fifty-two million, two hundred fifteen thousand, seven hundred one".