64154550 has 48 divisors (see below), whose sum is σ = 159936192. Its totient is φ = 17018400.

The previous prime is 64154537. The next prime is 64154561. The reversal of 64154550 is 5545146.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30637 + ... + 32663.

It is an arithmetic number, because the mean of its divisors is an integer number (3332004).

Almost surely, 2^64154550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64154550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79968096).

64154550 is an abundant number, since it is smaller than the sum of its proper divisors (95781642).

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

64154550 is a wasteful number, since it uses less digits than its factorization.

64154550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253 (or 2248 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 64154550 is about 8009.6535505601. The cubic root of 64154550 is about 400.3217203374.

Adding to 64154550 its reverse (5545146), we get a palindrome (69699696).

The spelling of 64154550 in words is "sixty-four million, one hundred fifty-four thousand, five hundred fifty".