52415917 has 4 divisors (see below), whose sum is σ = 53694396. Its totient is φ = 51137440.

The previous prime is 52415899. The next prime is 52415929. The reversal of 52415917 is 71951425.

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 11634921 + 40780996 = 3411^2 + 6386^2 .

It is a cyclic number.

It is not a de Polignac number, because 52415917 - 2¹¹ = 52413869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52415977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639178 + ... + 639259.

It is an arithmetic number, because the mean of its divisors is an integer number (13423599).

Almost surely, 2^52415917 is an apocalyptic number.

It is an amenable number.

52415917 is a deficient number, since it is larger than the sum of its proper divisors (1278479).

52415917 is a wasteful number, since it uses less digits than its factorization.

52415917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278478.

The product of its digits is 12600, while the sum is 34.

The square root of 52415917 is about 7239.8837697853. The cubic root of 52415917 is about 374.2436119574.

It can be divided in two parts, 524159 and 17, that added together give a square (524176 = 724²).

The spelling of 52415917 in words is "fifty-two million, four hundred fifteen thousand, nine hundred seventeen".