4251555 has 64 divisors (see below), whose sum is σ = 9446400. Its totient is φ = 1762560.

The previous prime is 4251553. The next prime is 4251563. The reversal of 4251555 is 5551524.

4251555 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4251555 - 2¹ = 4251553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

4251555 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (4251553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10191 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (147600).

Almost surely, 2^4251555 is an apocalyptic number.

4251555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4251555 is an abundant number, since it is smaller than the sum of its proper divisors (5194845).

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

4251555 is a wasteful number, since it uses less digits than its factorization.

4251555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 4251555 is about 2061.9299212146. The cubic root of 4251555 is about 162.0003429348. Note that the first 3 decimals are identical.

Subtracting from 4251555 its sum of digits (27), we obtain a cube (4251528 = 162³).

The spelling of 4251555 in words is "four million, two hundred fifty-one thousand, five hundred fifty-five".