61774452 has 36 divisors (see below), whose sum is σ = 156454116. Its totient is φ = 20551680.

The previous prime is 61774439. The next prime is 61774457. The reversal of 61774452 is 25447716.

It can be written as a sum of positive squares in 2 ways, for example, as 25341156 + 36433296 = 5034^2 + 6036^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61774457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21738 + ... + 24414.

Almost surely, 2^61774452 is an apocalyptic number.

It is an amenable number.

61774452 is an abundant number, since it is smaller than the sum of its proper divisors (94679664).

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

61774452 is a wasteful number, since it uses less digits than its factorization.

61774452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328 (or 3323 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 61774452 is about 7859.6725122616. The cubic root of 61774452 is about 395.3086344990.

It can be divided in two parts, 617744 and 52, that added together give a square (617796 = 786²).

The spelling of 61774452 in words is "sixty-one million, seven hundred seventy-four thousand, four hundred fifty-two".