204157465 has 4 divisors (see below), whose sum is σ = 244988964. Its totient is φ = 163325968.

The previous prime is 204157463. The next prime is 204157487. The reversal of 204157465 is 564751402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155451024 + 48706441 = 12468^2 + 6979^2 .

It is a cyclic number.

It is not a de Polignac number, because 204157465 - 2¹ = 204157463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204157465.

It is not an unprimeable number, because it can be changed into a prime (204157463) 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, 20415742 + ... + 20415751.

It is an arithmetic number, because the mean of its divisors is an integer number (61247241).

Almost surely, 2^204157465 is an apocalyptic number.

It is an amenable number.

204157465 is a deficient number, since it is larger than the sum of its proper divisors (40831499).

204157465 is an equidigital number, since it uses as much as digits as its factorization.

204157465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40831498.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 204157465 is about 14288.3681713483. The cubic root of 204157465 is about 588.8279567047.

The spelling of 204157465 in words is "two hundred four million, one hundred fifty-seven thousand, four hundred sixty-five".