75253971 has 8 divisors (see below), whose sum is σ = 108057040. Its totient is φ = 46310112.

The previous prime is 75253943. The next prime is 75253973. The reversal of 75253971 is 17935257.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-75253971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1929589 = 75253971 / (7 + 5 + 2 + 5 + 3 + 9 + 7 + 1).

It is not an unprimeable number, because it can be changed into a prime (75253973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964756 + ... + 964833.

It is an arithmetic number, because the mean of its divisors is an integer number (13507130).

Almost surely, 2^75253971 is an apocalyptic number.

75253971 is a deficient number, since it is larger than the sum of its proper divisors (32803069).

75253971 is a wasteful number, since it uses less digits than its factorization.

75253971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929605.

The product of its digits is 66150, while the sum is 39.

The square root of 75253971 is about 8674.9046680641. The cubic root of 75253971 is about 422.1918128786.

The spelling of 75253971 in words is "seventy-five million, two hundred fifty-three thousand, nine hundred seventy-one".