2554251660 has 144 divisors (see below), whose sum is σ = 8257406976. Its totient is φ = 637608576.

The previous prime is 2554251619. The next prime is 2554251697. The reversal of 2554251660 is 661524552.

2554251660 is a `hidden beast` number, since 2 + 5 + 542 + 51 + 6 + 60 = 666.

It is a super-2 number, since 2×2554251660² = 13048403085225511200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188017 + ... + 201143.

It is an arithmetic number, because the mean of its divisors is an integer number (57343104).

Almost surely, 2^2554251660 is an apocalyptic number.

2554251660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2554251660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4128703488).

2554251660 is an abundant number, since it is smaller than the sum of its proper divisors (5703155316).

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

2554251660 is a wasteful number, since it uses less digits than its factorization.

2554251660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13212 (or 13207 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 2554251660 is about 50539.6048658871. The cubic root of 2554251660 is about 1366.9560813472.

The spelling of 2554251660 in words is "two billion, five hundred fifty-four million, two hundred fifty-one thousand, six hundred sixty".