451555542 has 24 divisors (see below), whose sum is σ = 983782800. Its totient is φ = 149685840.

The previous prime is 451555529. The next prime is 451555543. The reversal of 451555542 is 245555154.

451555542 is a `hidden beast` number, since 4 + 51 + 55 + 554 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 451555497 and 451555506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451555543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66042 + ... + 72557.

It is an arithmetic number, because the mean of its divisors is an integer number (40990950).

Almost surely, 2^451555542 is an apocalyptic number.

451555542 is an abundant number, since it is smaller than the sum of its proper divisors (532227258).

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

451555542 is a wasteful number, since it uses less digits than its factorization.

451555542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138788 (or 138785 counting only the distinct ones).

The product of its digits is 100000, while the sum is 36.

The square root of 451555542 is about 21249.8362817223. The cubic root of 451555542 is about 767.1913995211.

The spelling of 451555542 in words is "four hundred fifty-one million, five hundred fifty-five thousand, five hundred forty-two".