554558640 has 160 divisors (see below), whose sum is σ = 1771600896. Its totient is φ = 143431680.

The previous prime is 554558639. The next prime is 554558657. The reversal of 554558640 is 46855455.

It is a junction number, because it is equal to n+sod(n) for n = 554558592 and 554558601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2379964 + ... + 2380196.

Almost surely, 2^554558640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 554558640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885800448).

554558640 is an abundant number, since it is smaller than the sum of its proper divisors (1217042256).

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

554558640 is a wasteful number, since it uses less digits than its factorization.

554558640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

The square root of 554558640 is about 23549.0687713973. The cubic root of 554558640 is about 821.5786759913.

The spelling of 554558640 in words is "five hundred fifty-four million, five hundred fifty-eight thousand, six hundred forty".