245155553 has 8 divisors (see below), whose sum is σ = 248102400. Its totient is φ = 242219808.

The previous prime is 245155549. The next prime is 245155577. The reversal of 245155553 is 355551542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245155553 - 2² = 245155549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245155753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46853 + ... + 51821.

It is an arithmetic number, because the mean of its divisors is an integer number (31012800).

Almost surely, 2^245155553 is an apocalyptic number.

It is an amenable number.

245155553 is a deficient number, since it is larger than the sum of its proper divisors (2946847).

245155553 is a wasteful number, since it uses less digits than its factorization.

245155553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551.

The product of its digits is 75000, while the sum is 35.

The square root of 245155553 is about 15657.4440123540. Note that the first 3 decimals coincide. The cubic root of 245155553 is about 625.8648745286.

The spelling of 245155553 in words is "two hundred forty-five million, one hundred fifty-five thousand, five hundred fifty-three".