252215421373 has 2 divisors, whose sum is σ = 252215421374. Its totient is φ = 252215421372.

The previous prime is 252215421343. The next prime is 252215421377. The reversal of 252215421373 is 373124512252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157103627769 + 95111793604 = 396363^2 + 308402^2 .

It is a cyclic number.

It is not a de Polignac number, because 252215421373 - 2¹³ = 252215413181 is a prime.

It is a super-2 number, since 2×252215421373² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252215421377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126107710686 + 126107710687.

It is an arithmetic number, because the mean of its divisors is an integer number (126107710687).

Almost surely, 2^252215421373 is an apocalyptic number.

It is an amenable number.

252215421373 is a deficient number, since it is larger than the sum of its proper divisors (1).

252215421373 is an equidigital number, since it uses as much as digits as its factorization.

252215421373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 37.

The spelling of 252215421373 in words is "two hundred fifty-two billion, two hundred fifteen million, four hundred twenty-one thousand, three hundred seventy-three".