70519221 has 16 divisors (see below), whose sum is σ = 107022720. Its totient is φ = 45865440.

The previous prime is 70519181. The next prime is 70519231. The reversal of 70519221 is 12291507.

It is not a de Polignac number, because 70519221 - 2¹⁴ = 70502837 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70519231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30745 + ... + 32958.

It is an arithmetic number, because the mean of its divisors is an integer number (6688920).

Almost surely, 2^70519221 is an apocalyptic number.

It is an amenable number.

70519221 is a deficient number, since it is larger than the sum of its proper divisors (36503499).

70519221 is a wasteful number, since it uses less digits than its factorization.

70519221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63753 (or 63747 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 70519221 is about 8397.5723277624. The cubic root of 70519221 is about 413.1450008436.

The spelling of 70519221 in words is "seventy million, five hundred nineteen thousand, two hundred twenty-one".