245503631 has 4 divisors (see below), whose sum is σ = 245684592. Its totient is φ = 245322672.

The previous prime is 245503597. The next prime is 245503669. The reversal of 245503631 is 136305542.

245503631 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245503631 is a prime.

It is a super-2 number, since 2×245503631² = 120544065668368322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245503594 and 245503603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245503331) 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, 88430 + ... + 91163.

It is an arithmetic number, because the mean of its divisors is an integer number (61421148).

Almost surely, 2^245503631 is an apocalyptic number.

245503631 is a deficient number, since it is larger than the sum of its proper divisors (180961).

245503631 is a wasteful number, since it uses less digits than its factorization.

245503631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180960.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 245503631 is about 15668.5554854300. Note that the first 3 decimals coincide. The cubic root of 245503631 is about 626.1609406650.

The spelling of 245503631 in words is "two hundred forty-five million, five hundred three thousand, six hundred thirty-one".