345355551 has 12 divisors (see below), whose sum is σ = 501434128. Its totient is φ = 229042944.

The previous prime is 345355547. The next prime is 345355553. The reversal of 345355551 is 155553543.

345355551 is a `hidden beast` number, since 3 + 4 + 53 + 55 + 551 = 666.

It is not a de Polignac number, because 345355551 - 2² = 345355547 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 (345355553) 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, 97675 + ... + 101148.

Almost surely, 2^345355551 is an apocalyptic number.

345355551 is a deficient number, since it is larger than the sum of its proper divisors (156078577).

345355551 is a wasteful number, since it uses less digits than its factorization.

345355551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199022 (or 199019 counting only the distinct ones).

The product of its digits is 112500, while the sum is 36.

The square root of 345355551 is about 18583.7442675043. The cubic root of 345355551 is about 701.5987613835.

The spelling of 345355551 in words is "three hundred forty-five million, three hundred fifty-five thousand, five hundred fifty-one".