52415231 has 4 divisors (see below), whose sum is σ = 57180264. Its totient is φ = 47650200.

The previous prime is 52415221. The next prime is 52415249. The reversal of 52415231 is 13251425.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52415231 is a prime.

It is a super-2 number, since 2×52415231² = 5494712881566722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52415197 and 52415206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52415201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382500 + ... + 2382521.

It is an arithmetic number, because the mean of its divisors is an integer number (14295066).

Almost surely, 2^52415231 is an apocalyptic number.

52415231 is a deficient number, since it is larger than the sum of its proper divisors (4765033).

52415231 is a wasteful number, since it uses less digits than its factorization.

52415231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765032.

The product of its digits is 1200, while the sum is 23.

The square root of 52415231 is about 7239.8363931791. The cubic root of 52415231 is about 374.2419792966.

Adding to 52415231 its reverse (13251425), we get a palindrome (65666656).

It can be divided in two parts, 5 and 2415231, that multiplied together give a triangular number (12076155 = T₄₉₁₄).

The spelling of 52415231 in words is "fifty-two million, four hundred fifteen thousand, two hundred thirty-one".