64212055 has 4 divisors (see below), whose sum is σ = 77054472. Its totient is φ = 51369640.

The previous prime is 64212053. The next prime is 64212073. The reversal of 64212055 is 55021246.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64212055 - 2¹ = 64212053 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 (64212053) 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, 6421201 + ... + 6421210.

It is an arithmetic number, because the mean of its divisors is an integer number (19263618).

Almost surely, 2^64212055 is an apocalyptic number.

64212055 is a deficient number, since it is larger than the sum of its proper divisors (12842417).

64212055 is a wasteful number, since it uses less digits than its factorization.

64212055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12842416.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 64212055 is about 8013.2424772997. The cubic root of 64212055 is about 400.4412942195.

The spelling of 64212055 in words is "sixty-four million, two hundred twelve thousand, fifty-five".