61043775 has 48 divisors (see below), whose sum is σ = 109722144. Its totient is φ = 29767680.

The previous prime is 61043699. The next prime is 61043779. The reversal of 61043775 is 57734016.

It is not a de Polignac number, because 61043775 - 2⁸ = 61043519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61043779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133347 + ... + 133803.

It is an arithmetic number, because the mean of its divisors is an integer number (2285878).

Almost surely, 2^61043775 is an apocalyptic number.

61043775 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61043775 is a deficient number, since it is larger than the sum of its proper divisors (48678369).

61043775 is a wasteful number, since it uses less digits than its factorization.

61043775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 61043775 is about 7813.0515805286. The cubic root of 61043775 is about 393.7438598186.

The spelling of 61043775 in words is "sixty-one million, forty-three thousand, seven hundred seventy-five".