61157894 has 16 divisors (see below), whose sum is σ = 104954400. Its totient is φ = 26182464.

The previous prime is 61157893. The next prime is 61157917. The reversal of 61157894 is 49875116.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61157893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16352 + ... + 19740.

It is an arithmetic number, because the mean of its divisors is an integer number (6559650).

Almost surely, 2^61157894 is an apocalyptic number.

61157894 is a deficient number, since it is larger than the sum of its proper divisors (43796506).

61157894 is a wasteful number, since it uses less digits than its factorization.

61157894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687.

The product of its digits is 60480, while the sum is 41.

The square root of 61157894 is about 7820.3512708829. The cubic root of 61157894 is about 393.9890701014.

The spelling of 61157894 in words is "sixty-one million, one hundred fifty-seven thousand, eight hundred ninety-four".