61934521 has 4 divisors (see below), whose sum is σ = 67564944. Its totient is φ = 56304100.

The previous prime is 61934479. The next prime is 61934531. The reversal of 61934521 is 12543916.

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.

It is a cyclic number.

It is not a de Polignac number, because 61934521 - 2¹¹ = 61932473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61934531) 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, 2815195 + ... + 2815216.

It is an arithmetic number, because the mean of its divisors is an integer number (16891236).

Almost surely, 2^61934521 is an apocalyptic number.

It is an amenable number.

61934521 is a deficient number, since it is larger than the sum of its proper divisors (5630423).

61934521 is a wasteful number, since it uses less digits than its factorization.

61934521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630422.

The product of its digits is 6480, while the sum is 31.

The square root of 61934521 is about 7869.8488549654. The cubic root of 61934521 is about 395.6497792089.

The spelling of 61934521 in words is "sixty-one million, nine hundred thirty-four thousand, five hundred twenty-one".