345353553 has 12 divisors (see below), whose sum is σ = 504450180. Its totient is φ = 227648256.

The previous prime is 345353549. The next prime is 345353581. The reversal of 345353553 is 355353543.

345353553 is a `hidden beast` number, since 3 + 4 + 53 + 53 + 553 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 191767104 + 153586449 = 13848^2 + 12393^2 .

It is not a de Polignac number, because 345353553 - 2² = 345353549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345353543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214776 + ... + 216377.

It is an arithmetic number, because the mean of its divisors is an integer number (42037515).

Almost surely, 2^345353553 is an apocalyptic number.

It is an amenable number.

345353553 is a deficient number, since it is larger than the sum of its proper divisors (159096627).

345353553 is a wasteful number, since it uses less digits than its factorization.

345353553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431248 (or 431245 counting only the distinct ones).

The product of its digits is 202500, while the sum is 36.

The square root of 345353553 is about 18583.6905107678. The cubic root of 345353553 is about 701.5974083846.

The spelling of 345353553 in words is "three hundred forty-five million, three hundred fifty-three thousand, five hundred fifty-three".