91497652 has 12 divisors (see below), whose sum is σ = 161590660. Its totient is φ = 45328896.

The previous prime is 91497649. The next prime is 91497667. The reversal of 91497652 is 25679419.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65221776 + 26275876 = 8076^2 + 5126^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 91497599 and 91497608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104493 + ... + 105364.

Almost surely, 2^91497652 is an apocalyptic number.

It is an amenable number.

91497652 is a deficient number, since it is larger than the sum of its proper divisors (70093008).

91497652 is a wasteful number, since it uses less digits than its factorization.

91497652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209970 (or 209968 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 91497652 is about 9565.4405021410. The cubic root of 91497652 is about 450.6125846407.

The spelling of 91497652 in words is "ninety-one million, four hundred ninety-seven thousand, six hundred fifty-two".