61442772 has 12 divisors (see below), whose sum is σ = 143366496. Its totient is φ = 20480920.

The previous prime is 61442753. The next prime is 61442779. The reversal of 61442772 is 27724416.

61442772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61442779) 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, 2560104 + ... + 2560127.

It is an arithmetic number, because the mean of its divisors is an integer number (11947208).

Almost surely, 2^61442772 is an apocalyptic number.

It is an amenable number.

61442772 is an abundant number, since it is smaller than the sum of its proper divisors (81923724).

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

61442772 is a wasteful number, since it uses less digits than its factorization.

61442772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120238 (or 5120236 counting only the distinct ones).

The product of its digits is 18816, while the sum is 33.

The square root of 61442772 is about 7838.5439974526. The cubic root of 61442772 is about 394.5998661264.

The spelling of 61442772 in words is "sixty-one million, four hundred forty-two thousand, seven hundred seventy-two".