52215491 has 2 divisors, whose sum is σ = 52215492. Its totient is φ = 52215490.

The previous prime is 52215479. The next prime is 52215503. The reversal of 52215491 is 19451225.

It is a balanced prime because it is at equal distance from previous prime (52215479) and next prime (52215503).

It is a cyclic number.

It is not a de Polignac number, because 52215491 - 2¹⁸ = 51953347 is a prime.

It is not a weakly prime, because it can be changed into another prime (52215091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26107745 + 26107746.

It is an arithmetic number, because the mean of its divisors is an integer number (26107746).

Almost surely, 2^52215491 is an apocalyptic number.

52215491 is a deficient number, since it is larger than the sum of its proper divisors (1).

52215491 is an equidigital number, since it uses as much as digits as its factorization.

52215491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 52215491 is about 7226.0287156916. The cubic root of 52215491 is about 373.7659964891.

The spelling of 52215491 in words is "fifty-two million, two hundred fifteen thousand, four hundred ninety-one".