63758251 has 2 divisors, whose sum is σ = 63758252. Its totient is φ = 63758250.

The previous prime is 63758249. The next prime is 63758257. The reversal of 63758251 is 15285736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63758251 - 2¹ = 63758249 is a prime.

It is a super-2 number, since 2×63758251² = 8130229141158002, which contains 22 as substring.

Together with 63758249, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 63758251.

It is not a weakly prime, because it can be changed into another prime (63758257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31879125 + 31879126.

It is an arithmetic number, because the mean of its divisors is an integer number (31879126).

Almost surely, 2^63758251 is an apocalyptic number.

63758251 is a deficient number, since it is larger than the sum of its proper divisors (1).

63758251 is an equidigital number, since it uses as much as digits as its factorization.

63758251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 63758251 is about 7984.8763922806. The cubic root of 63758251 is about 399.4957207733.

It can be divided in two parts, 63758 and 251, that added together give a square (64009 = 253²).

The spelling of 63758251 in words is "sixty-three million, seven hundred fifty-eight thousand, two hundred fifty-one".