345503551 has 2 divisors, whose sum is σ = 345503552. Its totient is φ = 345503550.

The previous prime is 345503531. The next prime is 345503569. The reversal of 345503551 is 155305543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345503551 - 2⁷ = 345503423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345503531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172751775 + 172751776.

It is an arithmetic number, because the mean of its divisors is an integer number (172751776).

Almost surely, 2^345503551 is an apocalyptic number.

345503551 is a deficient number, since it is larger than the sum of its proper divisors (1).

345503551 is an equidigital number, since it uses as much as digits as its factorization.

345503551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 345503551 is about 18587.7258157097. The cubic root of 345503551 is about 701.6989690170.

The spelling of 345503551 in words is "three hundred forty-five million, five hundred three thousand, five hundred fifty-one".