5551861026 has 64 divisors (see below), whose sum is σ = 11928960000. Its totient is φ = 1718076096.

The previous prime is 5551861019. The next prime is 5551861027. The reversal of 5551861026 is 6201681555.

It is not an unprimeable number, because it can be changed into a prime (5551861027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2546805 + ... + 2548983.

It is an arithmetic number, because the mean of its divisors is an integer number (186390000).

Almost surely, 2^5551861026 is an apocalyptic number.

5551861026 is an abundant number, since it is smaller than the sum of its proper divisors (6377098974).

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

5551861026 is a wasteful number, since it uses less digits than its factorization.

5551861026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743.

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 5551861026 is about 74510.8114705510. The cubic root of 5551861026 is about 1770.7049258942.

The spelling of 5551861026 in words is "five billion, five hundred fifty-one million, eight hundred sixty-one thousand, twenty-six".