345901557 has 4 divisors (see below), whose sum is σ = 461202080. Its totient is φ = 230601036.

The previous prime is 345901541. The next prime is 345901571. The reversal of 345901557 is 755109543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755109543 = 3 ⋅251703181.

It is not a de Polignac number, because 345901557 - 2⁴ = 345901541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345901597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57650257 + ... + 57650262.

It is an arithmetic number, because the mean of its divisors is an integer number (115300520).

Almost surely, 2^345901557 is an apocalyptic number.

It is an amenable number.

345901557 is a deficient number, since it is larger than the sum of its proper divisors (115300523).

345901557 is a wasteful number, since it uses less digits than its factorization.

345901557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115300522.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 345901557 is about 18598.4288852580. The cubic root of 345901557 is about 701.9683084856.

The spelling of 345901557 in words is "three hundred forty-five million, nine hundred one thousand, five hundred fifty-seven".