4551551 has 4 divisors (see below), whose sum is σ = 4584912. Its totient is φ = 4518192.

The previous prime is 4551523. The next prime is 4551559. The reversal of 4551551 is 1551554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1551554 = 2 ⋅775777.

It is a cyclic number.

It is not a de Polignac number, because 4551551 - 2⁶ = 4551487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4551551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4551559) 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, 16475 + ... + 16748.

It is an arithmetic number, because the mean of its divisors is an integer number (1146228).

Almost surely, 2^4551551 is an apocalyptic number.

4551551 is a deficient number, since it is larger than the sum of its proper divisors (33361).

4551551 is a wasteful number, since it uses less digits than its factorization.

4551551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33360.

The product of its digits is 2500, while the sum is 26.

The square root of 4551551 is about 2133.4364298005. The cubic root of 4551551 is about 165.7244060194.

The spelling of 4551551 in words is "four million, five hundred fifty-one thousand, five hundred fifty-one".