1042555551 has 32 divisors (see below), whose sum is σ = 1449197568. Its totient is φ = 666230880.

The previous prime is 1042555537. The next prime is 1042555561. The reversal of 1042555551 is 1555552401.

1042555551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1042555551 - 2⁵ = 1042555519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042555561) 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, 2232220 + ... + 2232686.

It is an arithmetic number, because the mean of its divisors is an integer number (45287424).

Almost surely, 2^1042555551 is an apocalyptic number.

1042555551 is a deficient number, since it is larger than the sum of its proper divisors (406642017).

1042555551 is a wasteful number, since it uses less digits than its factorization.

1042555551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 1042555551 is about 32288.6288188272. The cubic root of 1042555551 is about 1013.9885905683.

The spelling of 1042555551 in words is "one billion, forty-two million, five hundred fifty-five thousand, five hundred fifty-one".