61535541 has 8 divisors (see below), whose sum is σ = 82473280. Its totient is φ = 40810752.

The previous prime is 61535531. The next prime is 61535609. The reversal of 61535541 is 14553516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61535541 - 2⁹ = 61535029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61535499 and 61535508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61535501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52561 + ... + 53718.

It is an arithmetic number, because the mean of its divisors is an integer number (10309160).

Almost surely, 2^61535541 is an apocalyptic number.

It is an amenable number.

61535541 is a deficient number, since it is larger than the sum of its proper divisors (20937739).

61535541 is a wasteful number, since it uses less digits than its factorization.

61535541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106475.

The product of its digits is 9000, while the sum is 30.

The square root of 61535541 is about 7844.4592547861. The cubic root of 61535541 is about 394.7983610065.

The spelling of 61535541 in words is "sixty-one million, five hundred thirty-five thousand, five hundred forty-one".