361622251 has 2 divisors, whose sum is σ = 361622252. Its totient is φ = 361622250.

The previous prime is 361622227. The next prime is 361622267. The reversal of 361622251 is 152226163.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 361622251 - 2¹³ = 361614059 is a prime.

It is not a weakly prime, because it can be changed into another prime (361622281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180811125 + 180811126.

It is an arithmetic number, because the mean of its divisors is an integer number (180811126).

Almost surely, 2^361622251 is an apocalyptic number.

361622251 is a deficient number, since it is larger than the sum of its proper divisors (1).

361622251 is an equidigital number, since it uses as much as digits as its factorization.

361622251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 361622251 is about 19016.3679760358. The cubic root of 361622251 is about 712.4456105399.

The spelling of 361622251 in words is "three hundred sixty-one million, six hundred twenty-two thousand, two hundred fifty-one".