61622573 has 4 divisors (see below), whose sum is σ = 61687008. Its totient is φ = 61558140.

The previous prime is 61622563. The next prime is 61622591. The reversal of 61622573 is 37522616.

61622573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61622573 - 2⁴ = 61622557 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 (61622503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30761 + ... + 32702.

It is an arithmetic number, because the mean of its divisors is an integer number (15421752).

Almost surely, 2^61622573 is an apocalyptic number.

It is an amenable number.

61622573 is a deficient number, since it is larger than the sum of its proper divisors (64435).

61622573 is an equidigital number, since it uses as much as digits as its factorization.

61622573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64434.

The product of its digits is 15120, while the sum is 32.

The square root of 61622573 is about 7850.0046496802. The cubic root of 61622573 is about 394.9843993198.

It can be divided in two parts, 61622 and 573, that multiplied together give a triangular number (35309406 = T₈₄₀₃).

The spelling of 61622573 in words is "sixty-one million, six hundred twenty-two thousand, five hundred seventy-three".