245555501 has 4 divisors (see below), whose sum is σ = 245723904. Its totient is φ = 245387100.

The previous prime is 245555467. The next prime is 245555507. The reversal of 245555501 is 105555542.

245555501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245555501 is a prime.

It is a super-2 number, since 2×245555501² = 120595008142722002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245555507) 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, 81995 + ... + 84936.

It is an arithmetic number, because the mean of its divisors is an integer number (61430976).

Almost surely, 2^245555501 is an apocalyptic number.

It is an amenable number.

245555501 is a deficient number, since it is larger than the sum of its proper divisors (168403).

245555501 is a wasteful number, since it uses less digits than its factorization.

245555501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168402.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 245555501 is about 15670.2106239833. The cubic root of 245555501 is about 626.2050359814.

The spelling of 245555501 in words is "two hundred forty-five million, five hundred fifty-five thousand, five hundred one".