345863553 has 32 divisors (see below), whose sum is σ = 542330880. Its totient is φ = 191963520.

The previous prime is 345863543. The next prime is 345863587. The reversal of 345863553 is 355368543.

It is not a de Polignac number, because 345863553 - 2¹² = 345859457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345863533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135933 + ... + 138453.

It is an arithmetic number, because the mean of its divisors is an integer number (16947840).

Almost surely, 2^345863553 is an apocalyptic number.

It is an amenable number.

345863553 is a deficient number, since it is larger than the sum of its proper divisors (196467327).

345863553 is a wasteful number, since it uses less digits than its factorization.

345863553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717.

The product of its digits is 648000, while the sum is 42.

The square root of 345863553 is about 18597.4071579884. The cubic root of 345863553 is about 701.9425992628.

The spelling of 345863553 in words is "three hundred forty-five million, eight hundred sixty-three thousand, five hundred fifty-three".