70021053 has 6 divisors (see below), whose sum is σ = 101141534. Its totient is φ = 46680696.

The previous prime is 70021037. The next prime is 70021067. The reversal of 70021053 is 35012007.

It can be written as a sum of positive squares in only one way, i.e., 52229529 + 17791524 = 7227^2 + 4218^2 .

It is not a de Polignac number, because 70021053 - 2⁴ = 70021037 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 (70021093) 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, 3890050 + ... + 3890067.

Almost surely, 2^70021053 is an apocalyptic number.

It is an amenable number.

70021053 is a deficient number, since it is larger than the sum of its proper divisors (31120481).

70021053 is a wasteful number, since it uses less digits than its factorization.

70021053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780123 (or 7780120 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 70021053 is about 8367.8583281506. The cubic root of 70021053 is about 412.1698427058.

The spelling of 70021053 in words is "seventy million, twenty-one thousand, fifty-three".