61342521 has 8 divisors (see below), whose sum is σ = 84428544. Its totient is φ = 39575760.

The previous prime is 61342517. The next prime is 61342531. The reversal of 61342521 is 12524316.

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

It is not a de Polignac number, because 61342521 - 2² = 61342517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61342491 and 61342500.

It is not an unprimeable number, because it can be changed into a prime (61342531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329706 + ... + 329891.

It is an arithmetic number, because the mean of its divisors is an integer number (10553568).

Almost surely, 2^61342521 is an apocalyptic number.

It is an amenable number.

61342521 is a deficient number, since it is larger than the sum of its proper divisors (23086023).

61342521 is a wasteful number, since it uses less digits than its factorization.

61342521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659631.

The product of its digits is 1440, while the sum is 24.

The square root of 61342521 is about 7832.1466406088. The cubic root of 61342521 is about 394.3851375019.

Adding to 61342521 its reverse (12524316), we get a palindrome (73866837).

It can be divided in two parts, 613 and 42521, that added together give a palindrome (43134).

The spelling of 61342521 in words is "sixty-one million, three hundred forty-two thousand, five hundred twenty-one".