61452250 has 32 divisors (see below), whose sum is σ = 115511760. Its totient is φ = 24480000.

The previous prime is 61452241. The next prime is 61452253. The reversal of 61452250 is 5225416.

It can be written as a sum of positive squares in 8 ways, for example, as 20223009 + 41229241 = 4497^2 + 6421^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61452253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 101950 + ... + 102550.

Almost surely, 2^61452250 is an apocalyptic number.

61452250 is a deficient number, since it is larger than the sum of its proper divisors (54059510).

61452250 is a wasteful number, since it uses less digits than its factorization.

61452250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 61452250 is about 7839.1485507037. The cubic root of 61452250 is about 394.6201550615.

Adding to 61452250 its reverse (5225416), we get a palindrome (66677666).

The spelling of 61452250 in words is "sixty-one million, four hundred fifty-two thousand, two hundred fifty".