1055257806 has 16 divisors (see below), whose sum is σ = 2140242048. Its totient is φ = 346798200.

The previous prime is 1055257787. The next prime is 1055257807. The reversal of 1055257806 is 6087525501.

It is a super-2 number, since 2×1055257806² = 2227138074247867272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055257807) 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, 1238140 + ... + 1238991.

It is an arithmetic number, because the mean of its divisors is an integer number (133765128).

Almost surely, 2^1055257806 is an apocalyptic number.

1055257806 is an abundant number, since it is smaller than the sum of its proper divisors (1084984242).

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

1055257806 is a wasteful number, since it uses less digits than its factorization.

1055257806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477207.

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 1055257806 is about 32484.7318905359. The cubic root of 1055257806 is about 1018.0900455960.

The spelling of 1055257806 in words is "one billion, fifty-five million, two hundred fifty-seven thousand, eight hundred six".