75251340 has 72 divisors (see below), whose sum is σ = 234452400. Its totient is φ = 19522944.

The previous prime is 75251329. The next prime is 75251347. The reversal of 75251340 is 4315257.

It is a happy number.

75251340 is a `hidden beast` number, since 7 + 525 + 134 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (75251347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1011 + ... + 12309.

Almost surely, 2^75251340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75251340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117226200).

75251340 is an abundant number, since it is smaller than the sum of its proper divisors (159201060).

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

75251340 is a wasteful number, since it uses less digits than its factorization.

75251340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351 (or 11346 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 75251340 is about 8674.7530224209. The cubic root of 75251340 is about 422.1868926528.

Adding to 75251340 its reverse (4315257), we get a palindrome (79566597).

The spelling of 75251340 in words is "seventy-five million, two hundred fifty-one thousand, three hundred forty".