345487253 has 4 divisors (see below), whose sum is σ = 345539808. Its totient is φ = 345434700.

The previous prime is 345487211. The next prime is 345487267. The reversal of 345487253 is 352784543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352784543 = 5189 ⋅67987.

It is a cyclic number.

It is not a de Polignac number, because 345487253 - 2⁸ = 345486997 is a prime.

It is a super-2 number, since 2×345487253² = 238722883970972018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345487253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345480253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14723 + ... + 30128.

It is an arithmetic number, because the mean of its divisors is an integer number (86384952).

Almost surely, 2^345487253 is an apocalyptic number.

It is an amenable number.

345487253 is a deficient number, since it is larger than the sum of its proper divisors (52555).

345487253 is an equidigital number, since it uses as much as digits as its factorization.

345487253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52554.

The product of its digits is 403200, while the sum is 41.

The square root of 345487253 is about 18587.2874029537. The cubic root of 345487253 is about 701.6879353922.

The spelling of 345487253 in words is "three hundred forty-five million, four hundred eighty-seven thousand, two hundred fifty-three".