2555551494 has 12 divisors (see below), whose sum is σ = 5537028276. Its totient is φ = 851850492.

The previous prime is 2555551477. The next prime is 2555551499. The reversal of 2555551494 is 4941555552.

2555551494 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 551 + 4 + 94 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555551499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70987524 + ... + 70987559.

It is an arithmetic number, because the mean of its divisors is an integer number (461419023).

Almost surely, 2^2555551494 is an apocalyptic number.

2555551494 is an abundant number, since it is smaller than the sum of its proper divisors (2981476782).

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

2555551494 is a wasteful number, since it uses less digits than its factorization.

2555551494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141975091 (or 141975088 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The square root of 2555551494 is about 50552.4627886713. The cubic root of 2555551494 is about 1367.1879189408.

It can be divided in two parts, 255555 and 1494, that added together give a square (257049 = 507²).

The spelling of 2555551494 in words is "two billion, five hundred fifty-five million, five hundred fifty-one thousand, four hundred ninety-four".