245651161 has 24 divisors (see below), whose sum is σ = 300084480. Its totient is φ = 200239200.

The previous prime is 245651143. The next prime is 245651167. The reversal of 245651161 is 161156542.

It is not a de Polignac number, because 245651161 - 2⁵ = 245651129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245651167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88251 + ... + 90991.

It is an arithmetic number, because the mean of its divisors is an integer number (12503520).

Almost surely, 2^245651161 is an apocalyptic number.

It is an amenable number.

245651161 is a deficient number, since it is larger than the sum of its proper divisors (54433319).

245651161 is a wasteful number, since it uses less digits than its factorization.

245651161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845 (or 2838 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 245651161 is about 15673.2626150397. The cubic root of 245651161 is about 626.2863414249.

The spelling of 245651161 in words is "two hundred forty-five million, six hundred fifty-one thousand, one hundred sixty-one".