61243144 has 16 divisors (see below), whose sum is σ = 114930000. Its totient is φ = 30595152.

The previous prime is 61243139. The next prime is 61243183. The reversal of 61243144 is 44134216.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9439 + ... + 14545.

It is an arithmetic number, because the mean of its divisors is an integer number (7183125).

Almost surely, 2^61243144 is an apocalyptic number.

It is an amenable number.

61243144 is a deficient number, since it is larger than the sum of its proper divisors (53686856).

61243144 is a wasteful number, since it uses less digits than its factorization.

61243144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612 (or 6608 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 61243144 is about 7825.7998952184. The cubic root of 61243144 is about 394.1720498818.

The spelling of 61243144 in words is "sixty-one million, two hundred forty-three thousand, one hundred forty-four".