61522413 has 4 divisors (see below), whose sum is σ = 82029888. Its totient is φ = 41014940.

The previous prime is 61522411. The next prime is 61522451. The reversal of 61522413 is 31422516.

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 61522413 - 2¹ = 61522411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61522411) 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, 10253733 + ... + 10253738.

It is an arithmetic number, because the mean of its divisors is an integer number (20507472).

Almost surely, 2^61522413 is an apocalyptic number.

It is an amenable number.

61522413 is a deficient number, since it is larger than the sum of its proper divisors (20507475).

61522413 is a wasteful number, since it uses less digits than its factorization.

61522413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20507474.

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

The square root of 61522413 is about 7843.6224411939. The cubic root of 61522413 is about 394.7702835659.

Adding to 61522413 its reverse (31422516), we get a palindrome (92944929).

The spelling of 61522413 in words is "sixty-one million, five hundred twenty-two thousand, four hundred thirteen".