245513566 has 8 divisors (see below), whose sum is σ = 368358120. Its totient is φ = 122727528.

The previous prime is 245513561. The next prime is 245513579. The reversal of 245513566 is 665315542.

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

It is a super-2 number, since 2×245513566² = 120553822180072712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245513561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936 + ... + 22243.

It is an arithmetic number, because the mean of its divisors is an integer number (46044765).

Almost surely, 2^245513566 is an apocalyptic number.

245513566 is a deficient number, since it is larger than the sum of its proper divisors (122844554).

245513566 is a wasteful number, since it uses less digits than its factorization.

245513566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258.

The product of its digits is 108000, while the sum is 37.

The square root of 245513566 is about 15668.8725184679. The cubic root of 245513566 is about 626.1693870099.

The spelling of 245513566 in words is "two hundred forty-five million, five hundred thirteen thousand, five hundred sixty-six".