551521454 has 16 divisors (see below), whose sum is σ = 902880000. Its totient is φ = 250583160.

The previous prime is 551521447. The next prime is 551521459. The reversal of 551521454 is 454125155.

It is a self number, because there is not a number n which added to its sum of digits gives 551521454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551521459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69797 + ... + 77295.

It is an arithmetic number, because the mean of its divisors is an integer number (56430000).

Almost surely, 2^551521454 is an apocalyptic number.

551521454 is a deficient number, since it is larger than the sum of its proper divisors (351358546).

551521454 is a wasteful number, since it uses less digits than its factorization.

551521454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10855.

The product of its digits is 20000, while the sum is 32.

The square root of 551521454 is about 23484.4939055539. The cubic root of 551521454 is about 820.0760657178.

The spelling of 551521454 in words is "five hundred fifty-one million, five hundred twenty-one thousand, four hundred fifty-four".