1056540099 has 8 divisors (see below), whose sum is σ = 1409496832. Its totient is φ = 703971720.

The previous prime is 1056540097. The next prime is 1056540101. The reversal of 1056540099 is 9900456501.

It is an interprime number because it is at equal distance from previous prime (1056540097) and next prime (1056540101).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1056540099 - 2¹ = 1056540097 is a prime.

It is a super-2 number, since 2×1056540099² = 2232553961589859602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056540097) 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, 90679 + ... + 101664.

It is an arithmetic number, because the mean of its divisors is an integer number (176187104).

Almost surely, 2^1056540099 is an apocalyptic number.

1056540099 is a deficient number, since it is larger than the sum of its proper divisors (352956733).

1056540099 is a wasteful number, since it uses less digits than its factorization.

1056540099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194177.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 1056540099 is about 32504.4627551356. The cubic root of 1056540099 is about 1018.5022549162.

The spelling of 1056540099 in words is "one billion, fifty-six million, five hundred forty thousand, ninety-nine".