345120451 has 32 divisors (see below), whose sum is σ = 420456960. Its totient is φ = 279949824.

The previous prime is 345120449. The next prime is 345120467. The reversal of 345120451 is 154021543.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 345120451 - 2¹ = 345120449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345120401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217780 + ... + 219358.

It is an arithmetic number, because the mean of its divisors is an integer number (13139280).

Almost surely, 2^345120451 is an apocalyptic number.

345120451 is a deficient number, since it is larger than the sum of its proper divisors (75336509).

345120451 is a wasteful number, since it uses less digits than its factorization.

345120451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 345120451 is about 18577.4177699701. The cubic root of 345120451 is about 701.4395213276.

Adding to 345120451 its reverse (154021543), we get a palindrome (499141994).

The spelling of 345120451 in words is "three hundred forty-five million, one hundred twenty thousand, four hundred fifty-one".