525421345 has 8 divisors (see below), whose sum is σ = 663690240. Its totient is φ = 398214000.

The previous prime is 525421339. The next prime is 525421357. The reversal of 525421345 is 543124525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525421345 - 2¹³ = 525413153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2765281 + ... + 2765470.

It is an arithmetic number, because the mean of its divisors is an integer number (82961280).

Almost surely, 2^525421345 is an apocalyptic number.

It is an amenable number.

525421345 is a deficient number, since it is larger than the sum of its proper divisors (138268895).

525421345 is a wasteful number, since it uses less digits than its factorization.

525421345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530775.

The product of its digits is 24000, while the sum is 31.

The square root of 525421345 is about 22922.0711324261. The cubic root of 525421345 is about 806.9300780315.

The spelling of 525421345 in words is "five hundred twenty-five million, four hundred twenty-one thousand, three hundred forty-five".