65131573 has 16 divisors (see below), whose sum is σ = 74704896. Its totient is φ = 56252160.

The previous prime is 65131543. The next prime is 65131579. The reversal of 65131573 is 37513156.

It is a cyclic number.

It is not a de Polignac number, because 65131573 - 2¹³ = 65123381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65131579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41440 + ... + 42982.

It is an arithmetic number, because the mean of its divisors is an integer number (4669056).

Almost surely, 2^65131573 is an apocalyptic number.

It is an amenable number.

65131573 is a deficient number, since it is larger than the sum of its proper divisors (9573323).

65131573 is a wasteful number, since it uses less digits than its factorization.

65131573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764.

The product of its digits is 9450, while the sum is 31.

The square root of 65131573 is about 8070.4134342672. The cubic root of 65131573 is about 402.3436847842.

The spelling of 65131573 in words is "sixty-five million, one hundred thirty-one thousand, five hundred seventy-three".