61141899 has 16 divisors (see below), whose sum is σ = 100335872. Its totient is φ = 32250528.

The previous prime is 61141897. The next prime is 61141907. The reversal of 61141899 is 99814116.

It is not a de Polignac number, because 61141899 - 2¹ = 61141897 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (61141891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111709 + ... + 112254.

It is an arithmetic number, because the mean of its divisors is an integer number (6270992).

Almost surely, 2^61141899 is an apocalyptic number.

61141899 is a deficient number, since it is larger than the sum of its proper divisors (39193973).

61141899 is a wasteful number, since it uses less digits than its factorization.

61141899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223986.

The product of its digits is 15552, while the sum is 39.

The square root of 61141899 is about 7819.3285517364. The cubic root of 61141899 is about 393.9547196454.

The spelling of 61141899 in words is "sixty-one million, one hundred forty-one thousand, eight hundred ninety-nine".