1055478660 has 48 divisors (see below), whose sum is σ = 3129186816. Its totient is φ = 264904192.

The previous prime is 1055478653. The next prime is 1055478667. The reversal of 1055478660 is 668745501.

It is an interprime number because it is at equal distance from previous prime (1055478653) and next prime (1055478667).

It is a super-2 number, since 2×1055478660² = 2228070403430791200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055478667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516372 + ... + 518411.

It is an arithmetic number, because the mean of its divisors is an integer number (65191392).

Almost surely, 2^1055478660 is an apocalyptic number.

1055478660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055478660 is an abundant number, since it is smaller than the sum of its proper divisors (2073708156).

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

1055478660 is a wasteful number, since it uses less digits than its factorization.

1055478660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034812 (or 1034810 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 1055478660 is about 32488.1310635130. The cubic root of 1055478660 is about 1018.1610657055.

The spelling of 1055478660 in words is "one billion, fifty-five million, four hundred seventy-eight thousand, six hundred sixty".