75722401 has 2 divisors, whose sum is σ = 75722402. Its totient is φ = 75722400.

The previous prime is 75722399. The next prime is 75722419. The reversal of 75722401 is 10422757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57744801 + 17977600 = 7599^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 75722401 - 2¹ = 75722399 is a prime.

Together with 75722399, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 75722401.

It is not a weakly prime, because it can be changed into another prime (75722431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37861200 + 37861201.

It is an arithmetic number, because the mean of its divisors is an integer number (37861201).

Almost surely, 2^75722401 is an apocalyptic number.

It is an amenable number.

75722401 is a deficient number, since it is larger than the sum of its proper divisors (1).

75722401 is an equidigital number, since it uses as much as digits as its factorization.

75722401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 75722401 is about 8701.8619271970. The cubic root of 75722401 is about 423.0660009870.

The spelling of 75722401 in words is "seventy-five million, seven hundred twenty-two thousand, four hundred one".