2554632978 has 16 divisors (see below), whose sum is σ = 5110360896. Its totient is φ = 851361840.

The previous prime is 2554632929. The next prime is 2554632979. The reversal of 2554632978 is 8792364552.

It is a happy number.

It is a super-2 number, since 2×2554632978² = 13052299304570296968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2554632978.

It is not an unprimeable number, because it can be changed into a prime (2554632979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13558 + ... + 72753.

It is an arithmetic number, because the mean of its divisors is an integer number (319397556).

Almost surely, 2^2554632978 is an apocalyptic number.

2554632978 is an abundant number, since it is smaller than the sum of its proper divisors (2555727918).

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

2554632978 is a wasteful number, since it uses less digits than its factorization.

2554632978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91249.

The product of its digits is 3628800, while the sum is 51.

The square root of 2554632978 is about 50543.3771922692. The cubic root of 2554632978 is about 1367.0241011422.

The spelling of 2554632978 in words is "two billion, five hundred fifty-four million, six hundred thirty-two thousand, nine hundred seventy-eight".