61995541 has 4 divisors (see below), whose sum is σ = 62011584. Its totient is φ = 61979500.

The previous prime is 61995503. The next prime is 61995547. The reversal of 61995541 is 14559916.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61995541 - 2¹³ = 61987349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61995494 and 61995503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61995547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (15502896).

It is a vampire number, since it can be written as 6491 ⋅ 9551 (with its own digits).

Almost surely, 2^61995541 is an apocalyptic number.

It is an amenable number.

61995541 is a deficient number, since it is larger than the sum of its proper divisors (16043).

61995541 is an equidigital number, since it uses as much as digits as its factorization.

61995541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16042.

The product of its digits is 48600, while the sum is 40.

The square root of 61995541 is about 7873.7247221375. The cubic root of 61995541 is about 395.7796724402.

The spelling of 61995541 in words is "sixty-one million, nine hundred ninety-five thousand, five hundred forty-one".