65520494 has 16 divisors (see below), whose sum is σ = 106081920. Its totient is φ = 30171360.

The previous prime is 65520473. The next prime is 65520509. The reversal of 65520494 is 49402556.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9824 + ... + 15084.

It is an arithmetic number, because the mean of its divisors is an integer number (6630120).

Almost surely, 2^65520494 is an apocalyptic number.

65520494 is a deficient number, since it is larger than the sum of its proper divisors (40561426).

65520494 is a wasteful number, since it uses less digits than its factorization.

65520494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 65520494 is about 8094.4730526452. The cubic root of 65520494 is about 403.1429360367.

The spelling of 65520494 in words is "sixty-five million, five hundred twenty thousand, four hundred ninety-four".