61453212 has 24 divisors (see below), whose sum is σ = 143519376. Its totient is φ = 20466048.

The previous prime is 61453211. The next prime is 61453229. The reversal of 61453212 is 21235416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61453211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21618 + ... + 24294.

It is an arithmetic number, because the mean of its divisors is an integer number (5979974).

Almost surely, 2^61453212 is an apocalyptic number.

It is an amenable number.

61453212 is an abundant number, since it is smaller than the sum of its proper divisors (82066164).

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

61453212 is a wasteful number, since it uses less digits than its factorization.

61453212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4595 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 61453212 is about 7839.2099091681. The cubic root of 61453212 is about 394.6222142354.

Adding to 61453212 its reverse (21235416), we get a palindrome (82688628).

The spelling of 61453212 in words is "sixty-one million, four hundred fifty-three thousand, two hundred twelve".