245747530 has 16 divisors (see below), whose sum is σ = 505537920. Its totient is φ = 84256272.

The previous prime is 245747521. The next prime is 245747531. The reversal of 245747530 is 35747542.

It is a happy number.

It is a super-2 number, since 2×245747530² = 120783697002201800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245747530.

It is not an unprimeable number, because it can be changed into a prime (245747531) 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, 1755270 + ... + 1755409.

It is an arithmetic number, because the mean of its divisors is an integer number (31596120).

Almost surely, 2^245747530 is an apocalyptic number.

245747530 is an abundant number, since it is smaller than the sum of its proper divisors (259790390).

245747530 is a wasteful number, since it uses less digits than its factorization.

245747530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510693.

The product of its (nonzero) digits is 117600, while the sum is 37.

The square root of 245747530 is about 15676.3366256278. The cubic root of 245747530 is about 626.3682281371.

The spelling of 245747530 in words is "two hundred forty-five million, seven hundred forty-seven thousand, five hundred thirty".