75855401 has 2 divisors, whose sum is σ = 75855402. Its totient is φ = 75855400.

The previous prime is 75855383. The next prime is 75855413. The reversal of 75855401 is 10455857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 10569001 = 8080^2 + 3251^2 .

It is an emirp because it is prime and its reverse (10455857) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75855401 - 2⁶ = 75855337 is a prime.

It is not a weakly prime, because it can be changed into another prime (75855421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37927700 + 37927701.

It is an arithmetic number, because the mean of its divisors is an integer number (37927701).

Almost surely, 2^75855401 is an apocalyptic number.

It is an amenable number.

75855401 is a deficient number, since it is larger than the sum of its proper divisors (1).

75855401 is an equidigital number, since it uses as much as digits as its factorization.

75855401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 75855401 is about 8709.5006171422. The cubic root of 75855401 is about 423.3135493403.

The spelling of 75855401 in words is "seventy-five million, eight hundred fifty-five thousand, four hundred one".