64143552 has 112 divisors (see below), whose sum is σ = 187415424. Its totient is φ = 19360000.

The previous prime is 64143551. The next prime is 64143553. The reversal of 64143552 is 25534146.

It is an interprime number because it is at equal distance from previous prime (64143551) and next prime (64143553).

It is a super-2 number, since 2×64143552² = 8228790526353408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64143551) 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, 255427 + ... + 255677.

It is an arithmetic number, because the mean of its divisors is an integer number (1673352).

Almost surely, 2^64143552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64143552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93707712).

64143552 is an abundant number, since it is smaller than the sum of its proper divisors (123271872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64143552 is a wasteful number, since it uses less digits than its factorization.

64143552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 267 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 64143552 is about 8008.9669745854. The cubic root of 64143552 is about 400.2988433427.

Adding to 64143552 its reverse (25534146), we get a palindrome (89677698).

The spelling of 64143552 in words is "sixty-four million, one hundred forty-three thousand, five hundred fifty-two".