245492554 has 4 divisors (see below), whose sum is σ = 368238834. Its totient is φ = 122746276.

The previous prime is 245492477. The next prime is 245492557. The reversal of 245492554 is 455294542.

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

It can be written as a sum of positive squares in only one way, i.e., 182655225 + 62837329 = 13515^2 + 7927^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (245492557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61373137 + ... + 61373140.

Almost surely, 2^245492554 is an apocalyptic number.

245492554 is a deficient number, since it is larger than the sum of its proper divisors (122746280).

245492554 is a wasteful number, since it uses less digits than its factorization.

245492554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122746279.

The product of its digits is 288000, while the sum is 40.

The square root of 245492554 is about 15668.2020027826. The cubic root of 245492554 is about 626.1515231681.

The spelling of 245492554 in words is "two hundred forty-five million, four hundred ninety-two thousand, five hundred fifty-four".