61531058 has 16 divisors (see below), whose sum is σ = 99188064. Its totient is φ = 28522560.

The previous prime is 61531051. The next prime is 61531061. The reversal of 61531058 is 85013516.

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 61531058.

It is not an unprimeable number, because it can be changed into a prime (61531051) 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, 11228 + ... + 15783.

It is an arithmetic number, because the mean of its divisors is an integer number (6199254).

Almost surely, 2^61531058 is an apocalyptic number.

61531058 is a deficient number, since it is larger than the sum of its proper divisors (37657006).

61531058 is a wasteful number, since it uses less digits than its factorization.

61531058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27097.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 61531058 is about 7844.1735064951. The cubic root of 61531058 is about 394.7887734630.

The spelling of 61531058 in words is "sixty-one million, five hundred thirty-one thousand, fifty-eight".