63421554 has 32 divisors (see below), whose sum is σ = 146082816. Its totient is φ = 17980560.

The previous prime is 63421513. The next prime is 63421559. The reversal of 63421554 is 45512436.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63421559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262 + ... + 11265.

It is an arithmetic number, because the mean of its divisors is an integer number (4565088).

Almost surely, 2^63421554 is an apocalyptic number.

63421554 is an abundant number, since it is smaller than the sum of its proper divisors (82661262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63421554 is a wasteful number, since it uses less digits than its factorization.

63421554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11670.

The product of its digits is 14400, while the sum is 30.

The square root of 63421554 is about 7963.7650643399. The cubic root of 63421554 is about 398.7912551859.

The spelling of 63421554 in words is "sixty-three million, four hundred twenty-one thousand, five hundred fifty-four".