61279443 has 16 divisors (see below), whose sum is σ = 90944640. Its totient is φ = 40780872.

The previous prime is 61279417. The next prime is 61279447. The reversal of 61279443 is 34497216.

It is not a de Polignac number, because 61279443 - 2⁸ = 61279187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61279398 and 61279407.

It is not an unprimeable number, because it can be changed into a prime (61279447) 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, 16780 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (5684040).

Almost surely, 2^61279443 is an apocalyptic number.

61279443 is a deficient number, since it is larger than the sum of its proper divisors (29665197).

61279443 is a wasteful number, since it uses less digits than its factorization.

61279443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015 (or 4009 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 61279443 is about 7828.1187395185. The cubic root of 61279443 is about 394.2499101636.

The spelling of 61279443 in words is "sixty-one million, two hundred seventy-nine thousand, four hundred forty-three".