63174421 has 2 divisors, whose sum is σ = 63174422. Its totient is φ = 63174420.

The previous prime is 63174413. The next prime is 63174469. The reversal of 63174421 is 12447136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46771921 + 16402500 = 6839^2 + 4050^2 .

It is a cyclic number.

It is not a de Polignac number, because 63174421 - 2³ = 63174413 is a prime.

It is a pancake number, because a pancake can be divided into 63174421 parts by 11240 straight cuts.

It is equal to p_3739006 and since 63174421 and 3739006 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63174421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63174401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31587210 + 31587211.

It is an arithmetic number, because the mean of its divisors is an integer number (31587211).

Almost surely, 2^63174421 is an apocalyptic number.

It is an amenable number.

63174421 is a deficient number, since it is larger than the sum of its proper divisors (1).

63174421 is an equidigital number, since it uses as much as digits as its factorization.

63174421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 63174421 is about 7948.2338289711. The cubic root of 63174421 is about 398.2725946655.

The spelling of 63174421 in words is "sixty-three million, one hundred seventy-four thousand, four hundred twenty-one".