61752250 has 72 divisors (see below), whose sum is σ = 136394388. Its totient is φ = 20874000.

The previous prime is 61752247. The next prime is 61752253. The reversal of 61752250 is 5225716.

It is an interprime number because it is at equal distance from previous prime (61752247) and next prime (61752253).

It can be written as a sum of positive squares in 2 ways, for example, as 41744521 + 20007729 = 6461^2 + 4473^2 .

It is not an unprimeable number, because it can be changed into a prime (61752253) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 869715 + ... + 869785.

Almost surely, 2^61752250 is an apocalyptic number.

61752250 is an abundant number, since it is smaller than the sum of its proper divisors (74642138).

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

61752250 is an equidigital number, since it uses as much as digits as its factorization.

61752250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 61752250 is about 7858.2599855184. The cubic root of 61752250 is about 395.2612702911.

Adding to 61752250 its reverse (5225716), we get a palindrome (66977966).

The spelling of 61752250 in words is "sixty-one million, seven hundred fifty-two thousand, two hundred fifty".