61532517 has 8 divisors (see below), whose sum is σ = 84260896. Its totient is φ = 39912912.

The previous prime is 61532479. The next prime is 61532531. The reversal of 61532517 is 71523516.

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

It is not a de Polignac number, because 61532517 - 2¹⁶ = 61466981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61532587) 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, 277063 + ... + 277284.

It is an arithmetic number, because the mean of its divisors is an integer number (10532612).

Almost surely, 2^61532517 is an apocalyptic number.

It is an amenable number.

61532517 is a deficient number, since it is larger than the sum of its proper divisors (22728379).

61532517 is a wasteful number, since it uses less digits than its factorization.

61532517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554387.

The product of its digits is 6300, while the sum is 30.

The square root of 61532517 is about 7844.2665049066. The cubic root of 61532517 is about 394.7918937965.

Subtracting 61532517 from its reverse (71523516), we obtain a palindrome (9990999).

The spelling of 61532517 in words is "sixty-one million, five hundred thirty-two thousand, five hundred seventeen".