61042521 has 8 divisors (see below), whose sum is σ = 82769760. Its totient is φ = 40005152.

The previous prime is 61042493. The next prime is 61042523. The reversal of 61042521 is 12524016.

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

It is a cyclic number.

It is not a de Polignac number, because 61042521 - 2¹⁴ = 61026137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61042523) 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, 172260 + ... + 172613.

It is an arithmetic number, because the mean of its divisors is an integer number (10346220).

Almost surely, 2^61042521 is an apocalyptic number.

It is an amenable number.

61042521 is a deficient number, since it is larger than the sum of its proper divisors (21727239).

61042521 is a wasteful number, since it uses less digits than its factorization.

61042521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344935.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 61042521 is about 7812.9713297823. The cubic root of 61042521 is about 393.7411636213.

Adding to 61042521 its reverse (12524016), we get a palindrome (73566537).

The spelling of 61042521 in words is "sixty-one million, forty-two thousand, five hundred twenty-one".