1055401988 has 12 divisors (see below), whose sum is σ = 1910641740. Its totient is φ = 509504352.

The previous prime is 1055401981. The next prime is 1055402003. The reversal of 1055401988 is 8891045501.

It can be written as a sum of positive squares in 2 ways, for example, as 633428224 + 421973764 = 25168^2 + 20542^2 .

It is a super-2 number, since 2×1055401988² = 2227746712548704288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055401981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549031 + ... + 4549262.

It is an arithmetic number, because the mean of its divisors is an integer number (159220145).

Almost surely, 2^1055401988 is an apocalyptic number.

It is an amenable number.

1055401988 is a deficient number, since it is larger than the sum of its proper divisors (855239752).

1055401988 is a wasteful number, since it uses less digits than its factorization.

1055401988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9098326 (or 9098324 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 1055401988 is about 32486.9510419184. The cubic root of 1055401988 is about 1018.1364113824.

The spelling of 1055401988 in words is "one billion, fifty-five million, four hundred one thousand, nine hundred eighty-eight".