67251601 has 4 divisors (see below), whose sum is σ = 67765104. Its totient is φ = 66738100.

The previous prime is 67251599. The next prime is 67251629. The reversal of 67251601 is 10615276.

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 67251601 - 2¹ = 67251599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67251601.

It is not an unprimeable number, because it can be changed into a prime (67251101) 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, 256555 + ... + 256816.

It is an arithmetic number, because the mean of its divisors is an integer number (16941276).

Almost surely, 2^67251601 is an apocalyptic number.

It is an amenable number.

67251601 is a deficient number, since it is larger than the sum of its proper divisors (513503).

67251601 is a wasteful number, since it uses less digits than its factorization.

67251601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513502.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 67251601 is about 8200.7073475402. The cubic root of 67251601 is about 406.6625777456.

Adding to 67251601 its reverse (10615276), we get a palindrome (77866877).

The spelling of 67251601 in words is "sixty-seven million, two hundred fifty-one thousand, six hundred one".