64141531 has 4 divisors (see below), whose sum is σ = 64157632. Its totient is φ = 64125432.

The previous prime is 64141529. The next prime is 64141537. The reversal of 64141531 is 13514146.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13514146 = 2 ⋅6757073.

It is a cyclic number.

It is not a de Polignac number, because 64141531 - 2¹ = 64141529 is a prime.

It is a super-2 number, since 2×64141531² = 8228271998047922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64141496 and 64141505.

It is not an unprimeable number, because it can be changed into a prime (64141537) 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, 2806 + ... + 11668.

It is an arithmetic number, because the mean of its divisors is an integer number (16039408).

Almost surely, 2^64141531 is an apocalyptic number.

64141531 is a deficient number, since it is larger than the sum of its proper divisors (16101).

64141531 is an equidigital number, since it uses as much as digits as its factorization.

64141531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16100.

The product of its digits is 1440, while the sum is 25.

The square root of 64141531 is about 8008.8408025132. The cubic root of 64141531 is about 400.2946391661.

Adding to 64141531 its reverse (13514146), we get a palindrome (77655677).

The spelling of 64141531 in words is "sixty-four million, one hundred forty-one thousand, five hundred thirty-one".