1556753345 has 16 divisors (see below), whose sum is σ = 2138488320. Its totient is φ = 1065731904.

The previous prime is 1556753339. The next prime is 1556753371. The reversal of 1556753345 is 5433576551.

It is a cyclic number.

It is not a de Polignac number, because 1556753345 - 2⁴ = 1556753329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1556753296 and 1556753305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14825 + ... + 57734.

It is an arithmetic number, because the mean of its divisors is an integer number (133655520).

Almost surely, 2^1556753345 is an apocalyptic number.

It is an amenable number.

1556753345 is a deficient number, since it is larger than the sum of its proper divisors (581734975).

1556753345 is an equidigital number, since it uses as much as digits as its factorization.

1556753345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73184.

The product of its digits is 945000, while the sum is 44.

The square root of 1556753345 is about 39455.7137180409. The cubic root of 1556753345 is about 1158.9728682831.

The spelling of 1556753345 in words is "one billion, five hundred fifty-six million, seven hundred fifty-three thousand, three hundred forty-five".