65523261 has 4 divisors (see below), whose sum is σ = 87364352. Its totient is φ = 43682172.

The previous prime is 65523233. The next prime is 65523277. The reversal of 65523261 is 16232556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65523261 - 2¹³ = 65515069 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 (65523221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10920541 + ... + 10920546.

It is an arithmetic number, because the mean of its divisors is an integer number (21841088).

Almost surely, 2^65523261 is an apocalyptic number.

It is an amenable number.

65523261 is a deficient number, since it is larger than the sum of its proper divisors (21841091).

65523261 is a wasteful number, since it uses less digits than its factorization.

65523261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21841090.

The product of its digits is 10800, while the sum is 30.

The square root of 65523261 is about 8094.6439699347. The cubic root of 65523261 is about 403.1486110082.

The spelling of 65523261 in words is "sixty-five million, five hundred twenty-three thousand, two hundred sixty-one".