61722533 has 4 divisors (see below), whose sum is σ = 62166720. Its totient is φ = 61278348.

The previous prime is 61722523. The next prime is 61722539. The reversal of 61722533 is 33522716.

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 61722533 - 2⁴ = 61722517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61722496 and 61722505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61722539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221885 + ... + 222162.

It is an arithmetic number, because the mean of its divisors is an integer number (15541680).

Almost surely, 2^61722533 is an apocalyptic number.

It is an amenable number.

61722533 is a deficient number, since it is larger than the sum of its proper divisors (444187).

61722533 is a wasteful number, since it uses less digits than its factorization.

61722533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444186.

The product of its digits is 7560, while the sum is 29.

The square root of 61722533 is about 7856.3689450025. The cubic root of 61722533 is about 395.1978563327.

The spelling of 61722533 in words is "sixty-one million, seven hundred twenty-two thousand, five hundred thirty-three".