61543394 has 32 divisors (see below), whose sum is σ = 109684800. Its totient is φ = 25583040.

The previous prime is 61543387. The next prime is 61543403. The reversal of 61543394 is 49334516.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9584 + ... + 14660.

It is an arithmetic number, because the mean of its divisors is an integer number (3427650).

Almost surely, 2^61543394 is an apocalyptic number.

61543394 is a deficient number, since it is larger than the sum of its proper divisors (48141406).

61543394 is a wasteful number, since it uses less digits than its factorization.

61543394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138.

The product of its digits is 38880, while the sum is 35.

The square root of 61543394 is about 7844.9597831984. The cubic root of 61543394 is about 394.8151546600.

The spelling of 61543394 in words is "sixty-one million, five hundred forty-three thousand, three hundred ninety-four".