245465554 has 4 divisors (see below), whose sum is σ = 368198334. Its totient is φ = 122732776.

The previous prime is 245465513. The next prime is 245465557. The reversal of 245465554 is 455564542.

It is a happy number.

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., 177023025 + 68442529 = 13305^2 + 8273^2 .

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 (245465557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61366387 + ... + 61366390.

Almost surely, 2^245465554 is an apocalyptic number.

245465554 is a deficient number, since it is larger than the sum of its proper divisors (122732780).

245465554 is a wasteful number, since it uses less digits than its factorization.

245465554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122732779.

The product of its digits is 480000, while the sum is 40.

The square root of 245465554 is about 15667.3403614015. The cubic root of 245465554 is about 626.1285669919.

The spelling of 245465554 in words is "two hundred forty-five million, four hundred sixty-five thousand, five hundred fifty-four".