1055661064 has 16 divisors (see below), whose sum is σ = 2003213520. Its totient is φ = 521470800.

The previous prime is 1055661043. The next prime is 1055661067. The reversal of 1055661064 is 4601665501.

It is a happy number.

It is a super-2 number, since 2×1055661064² = 2228840564091224192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055661067) 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, 794262 + ... + 795589.

It is an arithmetic number, because the mean of its divisors is an integer number (125200845).

Almost surely, 2^1055661064 is an apocalyptic number.

It is an amenable number.

1055661064 is a deficient number, since it is larger than the sum of its proper divisors (947552456).

1055661064 is a wasteful number, since it uses less digits than its factorization.

1055661064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589940 (or 1589936 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1055661064 is about 32490.9381828226. The cubic root of 1055661064 is about 1018.2197139633.

The spelling of 1055661064 in words is "one billion, fifty-five million, six hundred sixty-one thousand, sixty-four".