91052070 has 32 divisors (see below), whose sum is σ = 223610112. Its totient is φ = 23715552.

The previous prime is 91052041. The next prime is 91052081. The reversal of 91052070 is 7025019.

It is a self number, because there is not a number n which added to its sum of digits gives 91052070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34002 + ... + 36581.

It is an arithmetic number, because the mean of its divisors is an integer number (6987816).

Almost surely, 2^91052070 is an apocalyptic number.

91052070 is an abundant number, since it is smaller than the sum of its proper divisors (132558042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91052070 is a wasteful number, since it uses less digits than its factorization.

91052070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70636.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 91052070 is about 9542.1208334416. The cubic root of 91052070 is about 449.8799185767.

Adding to 91052070 its reverse (7025019), we get a palindrome (98077089).

It can be divided in two parts, 9105 and 2070, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 91052070 in words is "ninety-one million, fifty-two thousand, seventy".