245355554 has 4 divisors (see below), whose sum is σ = 368033334. Its totient is φ = 122677776.

The previous prime is 245355511. The next prime is 245355589. The reversal of 245355554 is 455553542.

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., 122699929 + 122655625 = 11077^2 + 11075^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61338887 + ... + 61338890.

Almost surely, 2^245355554 is an apocalyptic number.

245355554 is a deficient number, since it is larger than the sum of its proper divisors (122677780).

245355554 is a wasteful number, since it uses less digits than its factorization.

245355554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122677779.

The product of its digits is 300000, while the sum is 38.

The square root of 245355554 is about 15663.8294806857. The cubic root of 245355554 is about 626.0350244263.

The spelling of 245355554 in words is "two hundred forty-five million, three hundred fifty-five thousand, five hundred fifty-four".