345541521 has 16 divisors (see below), whose sum is σ = 501742080. Its totient is φ = 210249600.

The previous prime is 345541519. The next prime is 345541549. The reversal of 345541521 is 125145543.

It is not a de Polignac number, because 345541521 - 2¹ = 345541519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345541591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46305 + ... + 53246.

It is an arithmetic number, because the mean of its divisors is an integer number (31358880).

Almost surely, 2^345541521 is an apocalyptic number.

It is an amenable number.

345541521 is a deficient number, since it is larger than the sum of its proper divisors (156200559).

345541521 is a wasteful number, since it uses less digits than its factorization.

345541521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99656.

The product of its digits is 12000, while the sum is 30.

The square root of 345541521 is about 18588.7471605808. The cubic root of 345541521 is about 701.7246730788.

The spelling of 345541521 in words is "three hundred forty-five million, five hundred forty-one thousand, five hundred twenty-one".