63155371 has 2 divisors, whose sum is σ = 63155372. Its totient is φ = 63155370.

The previous prime is 63155369. The next prime is 63155399. The reversal of 63155371 is 17355136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63155371 - 2¹ = 63155369 is a prime.

It is a super-2 number, since 2×63155371² = 7977201772295282, which contains 22 as substring.

Together with 63155369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63155321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31577685 + 31577686.

It is an arithmetic number, because the mean of its divisors is an integer number (31577686).

Almost surely, 2^63155371 is an apocalyptic number.

63155371 is a deficient number, since it is larger than the sum of its proper divisors (1).

63155371 is an equidigital number, since it uses as much as digits as its factorization.

63155371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 31.

The square root of 63155371 is about 7947.0353591764. The cubic root of 63155371 is about 398.2325581256.

The spelling of 63155371 in words is "sixty-three million, one hundred fifty-five thousand, three hundred seventy-one".