61534072 has 16 divisors (see below), whose sum is σ = 115578000. Its totient is φ = 30713280.

The previous prime is 61534051. The next prime is 61534079. The reversal of 61534072 is 27043516.

It is a self number, because there is not a number n which added to its sum of digits gives 61534072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534079) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1629 + ... + 11212.

It is an arithmetic number, because the mean of its divisors is an integer number (7223625).

Almost surely, 2^61534072 is an apocalyptic number.

It is an amenable number.

61534072 is a deficient number, since it is larger than the sum of its proper divisors (54043928).

61534072 is a wasteful number, since it uses less digits than its factorization.

61534072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446 (or 13442 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 61534072 is about 7844.3656212596. The cubic root of 61534072 is about 394.7952193890.

Adding to 61534072 its reverse (27043516), we get a palindrome (88577588).

The spelling of 61534072 in words is "sixty-one million, five hundred thirty-four thousand, seventy-two".