655400554 has 12 divisors (see below), whose sum is σ = 1037567394. Its totient is φ = 310452552.

The previous prime is 655400533. The next prime is 655400561. The reversal of 655400554 is 455004556.

It can be written as a sum of positive squares in only one way, i.e., 505215529 + 150185025 = 22477^2 + 12255^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453157 + ... + 454600.

Almost surely, 2^655400554 is an apocalyptic number.

655400554 is a deficient number, since it is larger than the sum of its proper divisors (382166840).

655400554 is a wasteful number, since it uses less digits than its factorization.

655400554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907797 (or 907778 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 655400554 is about 25600.7920580595. The cubic root of 655400554 is about 868.6315536876.

The spelling of 655400554 in words is "six hundred fifty-five million, four hundred thousand, five hundred fifty-four".