345972557 has 8 divisors (see below), whose sum is σ = 395875200. Its totient is φ = 296189424.

The previous prime is 345972547. The next prime is 345972569. The reversal of 345972557 is 755279543.

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

It is a cyclic number.

It is not a de Polignac number, because 345972557 - 2¹⁰ = 345971533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345972547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23582 + ... + 35327.

It is an arithmetic number, because the mean of its divisors is an integer number (49484400).

Almost surely, 2^345972557 is an apocalyptic number.

It is an amenable number.

345972557 is a deficient number, since it is larger than the sum of its proper divisors (49902643).

345972557 is an equidigital number, since it uses as much as digits as its factorization.

345972557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59755.

The product of its digits is 1323000, while the sum is 47.

The square root of 345972557 is about 18600.3375507005. The cubic root of 345972557 is about 702.0163340382.

The spelling of 345972557 in words is "three hundred forty-five million, nine hundred seventy-two thousand, five hundred fifty-seven".