75551312 has 10 divisors (see below), whose sum is σ = 146380698. Its totient is φ = 37775648.

The previous prime is 75551303. The next prime is 75551323. The reversal of 75551312 is 21315557.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45914176 + 29637136 = 6776^2 + 5444^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2360963 + ... + 2360994.

Almost surely, 2^75551312 is an apocalyptic number.

It is an amenable number.

75551312 is a deficient number, since it is larger than the sum of its proper divisors (70829386).

75551312 is a wasteful number, since it uses less digits than its factorization.

75551312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721965 (or 4721959 counting only the distinct ones).

The product of its digits is 5250, while the sum is 29.

The square root of 75551312 is about 8692.0257707855. The cubic root of 75551312 is about 422.7471322399.

Adding to 75551312 its reverse (21315557), we get a palindrome (96866869).

The spelling of 75551312 in words is "seventy-five million, five hundred fifty-one thousand, three hundred twelve".