70533491 has 32 divisors (see below), whose sum is σ = 88320000. Its totient is φ = 56137536.

The previous prime is 70533487. The next prime is 70533499. The reversal of 70533491 is 19433507.

It is a happy number.

It is not a de Polignac number, because 70533491 - 2² = 70533487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70533499) 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 31 ways as a sum of consecutive naturals, for example, 514775 + ... + 514911.

It is an arithmetic number, because the mean of its divisors is an integer number (2760000).

Almost surely, 2^70533491 is an apocalyptic number.

70533491 is a deficient number, since it is larger than the sum of its proper divisors (17786509).

70533491 is a wasteful number, since it uses less digits than its factorization.

70533491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 70533491 is about 8398.4219351019. The cubic root of 70533491 is about 413.1728664451.

Adding to 70533491 its reverse (19433507), we get a palindrome (89966998).

The spelling of 70533491 in words is "seventy million, five hundred thirty-three thousand, four hundred ninety-one".