65400501 has 16 divisors (see below), whose sum is σ = 88178688. Its totient is φ = 43114800.

The previous prime is 65400469. The next prime is 65400529. The reversal of 65400501 is 10500456.

It is a happy number.

It is not a de Polignac number, because 65400501 - 2⁵ = 65400469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65400541) 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, 178020 + ... + 178386.

It is an arithmetic number, because the mean of its divisors is an integer number (5511168).

Almost surely, 2^65400501 is an apocalyptic number.

It is an amenable number.

65400501 is a deficient number, since it is larger than the sum of its proper divisors (22778187).

65400501 is a wasteful number, since it uses less digits than its factorization.

65400501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 65400501 is about 8087.0576231408. The cubic root of 65400501 is about 402.8966828516.

Adding to 65400501 its reverse (10500456), we get a palindrome (75900957).

The spelling of 65400501 in words is "sixty-five million, four hundred thousand, five hundred one".