61263530 has 16 divisors (see below), whose sum is σ = 111144960. Its totient is φ = 24311952.

The previous prime is 61263511. The next prime is 61263539. The reversal of 61263530 is 3536216.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61263530.

It is not an unprimeable number, because it can be changed into a prime (61263539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22850 + ... + 25389.

It is an arithmetic number, because the mean of its divisors is an integer number (6946560).

Almost surely, 2^61263530 is an apocalyptic number.

61263530 is a deficient number, since it is larger than the sum of its proper divisors (49881430).

61263530 is a wasteful number, since it uses less digits than its factorization.

61263530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48373.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 61263530 is about 7827.1022735109. The cubic root of 61263530 is about 394.2157810351.

Adding to 61263530 its reverse (3536216), we get a palindrome (64799746).

The spelling of 61263530 in words is "sixty-one million, two hundred sixty-three thousand, five hundred thirty".