70553881 has 12 divisors (see below), whose sum is σ = 73057296. Its totient is φ = 68119920.

The previous prime is 70553837. The next prime is 70553887. The reversal of 70553881 is 18835507.

It is not a de Polignac number, because 70553881 - 2⁷ = 70553753 is a prime.

It is a super-2 number, since 2×70553881² = 9955700248324322, which contains 22 as substring.

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 70553881.

It is not an unprimeable number, because it can be changed into a prime (70553887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249166 + ... + 249448.

It is an arithmetic number, because the mean of its divisors is an integer number (6088108).

Almost surely, 2^70553881 is an apocalyptic number.

It is an amenable number.

70553881 is a deficient number, since it is larger than the sum of its proper divisors (2503415).

70553881 is an equidigital number, since it uses as much as digits as its factorization.

70553881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 70553881 is about 8399.6357659127. The cubic root of 70553881 is about 413.2126762951.

The spelling of 70553881 in words is "seventy million, five hundred fifty-three thousand, eight hundred eighty-one".