75572993 has 2 divisors, whose sum is σ = 75572994. Its totient is φ = 75572992.

The previous prime is 75572989. The next prime is 75573037. The reversal of 75572993 is 39927557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73479184 + 2093809 = 8572^2 + 1447^2 .

It is an emirp because it is prime and its reverse (39927557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75572993 - 2² = 75572989 is a prime.

It is a super-2 number, since 2×75572993² = 11422554541956098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75572953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37786496 + 37786497.

It is an arithmetic number, because the mean of its divisors is an integer number (37786497).

Almost surely, 2^75572993 is an apocalyptic number.

It is an amenable number.

75572993 is a deficient number, since it is larger than the sum of its proper divisors (1).

75572993 is an equidigital number, since it uses as much as digits as its factorization.

75572993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 595350, while the sum is 47.

The square root of 75572993 is about 8693.2728589410. The cubic root of 75572993 is about 422.7875670284.

The spelling of 75572993 in words is "seventy-five million, five hundred seventy-two thousand, nine hundred ninety-three".