61452280 has 32 divisors (see below), whose sum is σ = 146402640. Its totient is φ = 23134720.

The previous prime is 61452271. The next prime is 61452329. The reversal of 61452280 is 8225416.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44506 + ... + 45865.

Almost surely, 2^61452280 is an apocalyptic number.

It is an amenable number.

61452280 is an abundant number, since it is smaller than the sum of its proper divisors (84950360).

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

61452280 is a wasteful number, since it uses less digits than its factorization.

61452280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90399 (or 90395 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 61452280 is about 7839.1504641766. The cubic root of 61452280 is about 394.6202192773.

Adding to 61452280 its reverse (8225416), we get a palindrome (69677696).

The spelling of 61452280 in words is "sixty-one million, four hundred fifty-two thousand, two hundred eighty".