245501131 has 4 divisors (see below), whose sum is σ = 259942392. Its totient is φ = 231059872.

The previous prime is 245501129. The next prime is 245501143. The reversal of 245501131 is 131105542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245501131 - 2¹ = 245501129 is a prime.

It is a super-2 number, since 2×245501131² = 120541610644558322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245501101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7220605 + ... + 7220638.

It is an arithmetic number, because the mean of its divisors is an integer number (64985598).

Almost surely, 2^245501131 is an apocalyptic number.

245501131 is a deficient number, since it is larger than the sum of its proper divisors (14441261).

245501131 is a wasteful number, since it uses less digits than its factorization.

245501131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441260.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 245501131 is about 15668.4757076111. The cubic root of 245501131 is about 626.1588152277.

Adding to 245501131 its reverse (131105542), we get a palindrome (376606673).

The spelling of 245501131 in words is "two hundred forty-five million, five hundred one thousand, one hundred thirty-one".