1055660651 has 4 divisors (see below), whose sum is σ = 1055727792. Its totient is φ = 1055593512.

The previous prime is 1055660623. The next prime is 1055660657. The reversal of 1055660651 is 1560665501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1055660651 - 2¹⁴ = 1055644267 is a prime.

It is a super-2 number, since 2×1055660651² = 2228838820139487602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055660657) 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, 4121 + ... + 46133.

It is an arithmetic number, because the mean of its divisors is an integer number (263931948).

Almost surely, 2^1055660651 is an apocalyptic number.

1055660651 is a deficient number, since it is larger than the sum of its proper divisors (67141).

1055660651 is an equidigital number, since it uses as much as digits as its factorization.

1055660651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67140.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1055660651 is about 32490.9318272037. The cubic root of 1055660651 is about 1018.2195811793.

The spelling of 1055660651 in words is "one billion, fifty-five million, six hundred sixty thousand, six hundred fifty-one".