345402551 has 4 divisors (see below), whose sum is σ = 371971992. Its totient is φ = 318833112.

The previous prime is 345402529. The next prime is 345402559. The reversal of 345402551 is 155204543.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-345402551 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 (345402559) 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, 13284701 + ... + 13284726.

It is an arithmetic number, because the mean of its divisors is an integer number (92992998).

Almost surely, 2^345402551 is an apocalyptic number.

345402551 is a deficient number, since it is larger than the sum of its proper divisors (26569441).

345402551 is a wasteful number, since it uses less digits than its factorization.

345402551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26569440.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 345402551 is about 18585.0087705118. The cubic root of 345402551 is about 701.6305871796.

The spelling of 345402551 in words is "three hundred forty-five million, four hundred two thousand, five hundred fifty-one".