611531245 has 32 divisors (see below), whose sum is σ = 868089600. Its totient is φ = 409204224.

The previous prime is 611531237. The next prime is 611531273. The reversal of 611531245 is 542135116.

It is not a de Polignac number, because 611531245 - 2³ = 611531237 is a prime.

It is a super-2 number, since 2×611531245² = 747940927222500050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17641 + ... + 39169.

It is an arithmetic number, because the mean of its divisors is an integer number (27127800).

Almost surely, 2^611531245 is an apocalyptic number.

611531245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

611531245 is a deficient number, since it is larger than the sum of its proper divisors (256558355).

611531245 is a wasteful number, since it uses less digits than its factorization.

611531245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21589.

The product of its digits is 3600, while the sum is 28.

The square root of 611531245 is about 24729.1577899451. The cubic root of 611531245 is about 848.8016539035.

The spelling of 611531245 in words is "six hundred eleven million, five hundred thirty-one thousand, two hundred forty-five".