75001397 has 2 divisors, whose sum is σ = 75001398. Its totient is φ = 75001396.

The previous prime is 75001387. The next prime is 75001403. The reversal of 75001397 is 79310057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55562116 + 19439281 = 7454^2 + 4409^2 .

It is a cyclic number.

It is not a de Polignac number, because 75001397 - 2⁸ = 75001141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75001357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37500698 + 37500699.

It is an arithmetic number, because the mean of its divisors is an integer number (37500699).

Almost surely, 2^75001397 is an apocalyptic number.

It is an amenable number.

75001397 is a deficient number, since it is larger than the sum of its proper divisors (1).

75001397 is an equidigital number, since it uses as much as digits as its factorization.

75001397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 75001397 is about 8660.3346933014. The cubic root of 75001397 is about 421.7189510245.

The spelling of 75001397 in words is "seventy-five million, one thousand, three hundred ninety-seven".