75722081 has 4 divisors (see below), whose sum is σ = 76429872. Its totient is φ = 75014292.

The previous prime is 75722077. The next prime is 75722083. The reversal of 75722081 is 18022757.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75722081 - 2² = 75722077 is a prime.

It is a super-2 number, since 2×75722081² = 11467667101941122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75722083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353735 + ... + 353948.

It is an arithmetic number, because the mean of its divisors is an integer number (19107468).

Almost surely, 2^75722081 is an apocalyptic number.

It is an amenable number.

75722081 is a deficient number, since it is larger than the sum of its proper divisors (707791).

75722081 is a wasteful number, since it uses less digits than its factorization.

75722081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707790.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 75722081 is about 8701.8435403080. The cubic root of 75722081 is about 423.0654050325.

The spelling of 75722081 in words is "seventy-five million, seven hundred twenty-two thousand, eighty-one".