261422524 has 24 divisors (see below), whose sum is σ = 501088896. Its totient is φ = 118350000.

The previous prime is 261422521. The next prime is 261422573. The reversal of 261422524 is 425224162.

It is a junction number, because it is equal to n+sod(n) for n = 261422492 and 261422501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261422521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792 + ... + 22879.

It is an arithmetic number, because the mean of its divisors is an integer number (20878704).

Almost surely, 2^261422524 is an apocalyptic number.

It is an amenable number.

261422524 is a deficient number, since it is larger than the sum of its proper divisors (239666372).

261422524 is a wasteful number, since it uses less digits than its factorization.

261422524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23937 (or 23935 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 261422524 is about 16168.5659228022. The cubic root of 261422524 is about 639.4123218596.

Adding to 261422524 its reverse (425224162), we get a palindrome (686646686).

The spelling of 261422524 in words is "two hundred sixty-one million, four hundred twenty-two thousand, five hundred twenty-four".