70072501 has 4 divisors (see below), whose sum is σ = 70916832. Its totient is φ = 69228172.

The previous prime is 70072463. The next prime is 70072507. The reversal of 70072501 is 10527007.

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 a de Polignac number, because none of the positive numbers 2^k-70072501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70072507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422041 + ... + 422206.

It is an arithmetic number, because the mean of its divisors is an integer number (17729208).

Almost surely, 2^70072501 is an apocalyptic number.

It is an amenable number.

70072501 is a deficient number, since it is larger than the sum of its proper divisors (844331).

70072501 is an equidigital number, since it uses as much as digits as its factorization.

70072501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844330.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 70072501 is about 8370.9319074999. The cubic root of 70072501 is about 412.2707653176.

Adding to 70072501 its reverse (10527007), we get a palindrome (80599508).

The spelling of 70072501 in words is "seventy million, seventy-two thousand, five hundred one".