61611043 has 36 divisors (see below), whose sum is σ = 76057408. Its totient is φ = 49547520.

The previous prime is 61611041. The next prime is 61611049. The reversal of 61611043 is 34011616.

It is a happy number.

It is not a de Polignac number, because 61611043 - 2¹ = 61611041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61611041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1987438 + ... + 1987468.

Almost surely, 2^61611043 is an apocalyptic number.

61611043 is a deficient number, since it is larger than the sum of its proper divisors (14446365).

61611043 is a wasteful number, since it uses less digits than its factorization.

61611043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 61611043 is about 7849.2702208549. The cubic root of 61611043 is about 394.9597630327.

Adding to 61611043 its reverse (34011616), we get a palindrome (95622659).

The spelling of 61611043 in words is "sixty-one million, six hundred eleven thousand, forty-three".