75505401 has 6 divisors (see below), whose sum is σ = 109063370. Its totient is φ = 50336928.

The previous prime is 75505379. The next prime is 75505457. The reversal of 75505401 is 10450557.

75505401 is a `hidden beast` number, since 75 + 50 + 540 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 76176 = 8685^2 + 276^2 .

It is not a de Polignac number, because 75505401 - 2¹¹ = 75503353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75505201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4194736 + ... + 4194753.

Almost surely, 2^75505401 is an apocalyptic number.

It is an amenable number.

75505401 is a deficient number, since it is larger than the sum of its proper divisors (33557969).

75505401 is a wasteful number, since it uses less digits than its factorization.

75505401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389495 (or 8389492 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 75505401 is about 8689.3843855592. The cubic root of 75505401 is about 422.6614832690.

Adding to 75505401 its reverse (10450557), we get a palindrome (85955958).

The spelling of 75505401 in words is "seventy-five million, five hundred five thousand, four hundred one".