245521623 has 8 divisors (see below), whose sum is σ = 329008000. Its totient is φ = 162858168.

The previous prime is 245521579. The next prime is 245521637. The reversal of 245521623 is 326125542.

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

It is not a de Polignac number, because 245521623 - 2⁶ = 245521559 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 (245521693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205033 + ... + 206226.

It is an arithmetic number, because the mean of its divisors is an integer number (41126000).

Almost surely, 2^245521623 is an apocalyptic number.

245521623 is a deficient number, since it is larger than the sum of its proper divisors (83486377).

245521623 is a wasteful number, since it uses less digits than its factorization.

245521623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411461.

The product of its digits is 14400, while the sum is 30.

The square root of 245521623 is about 15669.1296184568. The cubic root of 245521623 is about 626.1762365860.

The spelling of 245521623 in words is "two hundred forty-five million, five hundred twenty-one thousand, six hundred twenty-three".