6453551556 has 45 divisors (see below), whose sum is σ = 16874639551. Its totient is φ = 2150701848.

The previous prime is 6453551537. The next prime is 6453551557. The reversal of 6453551556 is 6551553546.

The square root of 6453551556 is 80334.

It is a perfect power (a square), and thus also a powerful number.

6453551556 is a `hidden beast` number, since 6 + 45 + 3 + 5 + 51 + 556 = 666.

It is a super-2 number, since 2×6453551556² = 83296655371900042272, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6453551557) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1443781 + ... + 1448243.

Almost surely, 2^6453551556 is an apocalyptic number.

6453551556 is the 80334-th square number.

It is an amenable number.

6453551556 is an abundant number, since it is smaller than the sum of its proper divisors (10421087995).

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

6453551556 is an frugal number, since it uses more digits than its factorization.

6453551556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8942 (or 4468 counting only the distinct ones).

The product of its digits is 1350000, while the sum is 45.

The cubic root of 6453551556 is about 1861.7995798561.

It can be divided in two parts, 6453 and 551556, that added together give a square (558009 = 747²).

The spelling of 6453551556 in words is "six billion, four hundred fifty-three million, five hundred fifty-one thousand, five hundred fifty-six".