63551271 has 32 divisors (see below), whose sum is σ = 102445056. Its totient is φ = 34272000.

The previous prime is 63551269. The next prime is 63551273. The reversal of 63551271 is 17215536.

It is an interprime number because it is at equal distance from previous prime (63551269) and next prime (63551273).

It is not a de Polignac number, because 63551271 - 2¹ = 63551269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63551273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25501 + ... + 27881.

It is an arithmetic number, because the mean of its divisors is an integer number (3201408).

Almost surely, 2^63551271 is an apocalyptic number.

63551271 is a deficient number, since it is larger than the sum of its proper divisors (38893785).

63551271 is a wasteful number, since it uses less digits than its factorization.

63551271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463.

The product of its digits is 6300, while the sum is 30.

The square root of 63551271 is about 7971.9051048040. The cubic root of 63551271 is about 399.0629544951.

It can be divided in two parts, 6355 and 1271, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 63551271 in words is "sixty-three million, five hundred fifty-one thousand, two hundred seventy-one".