52215470 has 32 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 20113920.

The previous prime is 52215437. The next prime is 52215479. The reversal of 52215470 is 7451225.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120374 + ... + 120806.

It is an arithmetic number, because the mean of its divisors is an integer number (3046680).

Almost surely, 2^52215470 is an apocalyptic number.

52215470 is a deficient number, since it is larger than the sum of its proper divisors (45278290).

52215470 is a wasteful number, since it uses less digits than its factorization.

52215470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 52215470 is about 7226.0272626112. The cubic root of 52215470 is about 373.7659463821.

Adding to 52215470 its reverse (7451225), we get a palindrome (59666695).

The spelling of 52215470 in words is "fifty-two million, two hundred fifteen thousand, four hundred seventy".