70204521 has 8 divisors (see below), whose sum is σ = 93712864. Its totient is φ = 46749600.

The previous prime is 70204501. The next prime is 70204523. The reversal of 70204521 is 12540207.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70204521 - 2⁹ = 70204009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70204523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10180 + ... + 15621.

It is an arithmetic number, because the mean of its divisors is an integer number (11714108).

Almost surely, 2^70204521 is an apocalyptic number.

It is an amenable number.

70204521 is a deficient number, since it is larger than the sum of its proper divisors (23508343).

70204521 is a wasteful number, since it uses less digits than its factorization.

70204521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26711.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 70204521 is about 8378.8138181965. The cubic root of 70204521 is about 412.5295156107.

Adding to 70204521 its reverse (12540207), we get a palindrome (82744728).

The spelling of 70204521 in words is "seventy million, two hundred four thousand, five hundred twenty-one".