245161705 has 16 divisors (see below), whose sum is σ = 301713984. Its totient is φ = 191136960.

The previous prime is 245161703. The next prime is 245161711. The reversal of 245161705 is 507161542.

It is not a de Polignac number, because 245161705 - 2¹ = 245161703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245161703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121767 + ... + 123763.

It is an arithmetic number, because the mean of its divisors is an integer number (18857124).

Almost surely, 2^245161705 is an apocalyptic number.

It is an amenable number.

245161705 is a deficient number, since it is larger than the sum of its proper divisors (56552279).

245161705 is a wasteful number, since it uses less digits than its factorization.

245161705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 245161705 is about 15657.6404671968. The cubic root of 245161705 is about 625.8701096925.

The spelling of 245161705 in words is "two hundred forty-five million, one hundred sixty-one thousand, seven hundred five".