61321752 has 64 divisors (see below), whose sum is σ = 172716000. Its totient is φ = 20155392.

The previous prime is 61321717. The next prime is 61321763. The reversal of 61321752 is 25712316.

It is a happy number.

61321752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13824 + ... + 17712.

Almost surely, 2^61321752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61321752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86358000).

61321752 is an abundant number, since it is smaller than the sum of its proper divisors (111394248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61321752 is a wasteful number, since it uses less digits than its factorization.

61321752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977 (or 3967 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 61321752 is about 7830.8206466500. The cubic root of 61321752 is about 394.3406229228.

The spelling of 61321752 in words is "sixty-one million, three hundred twenty-one thousand, seven hundred fifty-two".