75151449 has 16 divisors (see below), whose sum is σ = 113706240. Its totient is φ = 49034160.

The previous prime is 75151411. The next prime is 75151457. The reversal of 75151449 is 94415157.

It is a Cunningham number, because it is equal to 422³+1.

It is not a de Polignac number, because 75151449 - 2⁹ = 75150937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75151459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28342 + ... + 30879.

It is an arithmetic number, because the mean of its divisors is an integer number (7106640).

Almost surely, 2^75151449 is an apocalyptic number.

It is an amenable number.

75151449 is a deficient number, since it is larger than the sum of its proper divisors (38554791).

75151449 is a wasteful number, since it uses less digits than its factorization.

75151449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59277 (or 59271 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 75151449 is about 8668.9935401983. The cubic root of 75151449 is about 422.0000018718. Note that the first 5 decimals are identical.

The spelling of 75151449 in words is "seventy-five million, one hundred fifty-one thousand, four hundred forty-nine".