5555951 has 4 divisors (see below), whose sum is σ = 5691504. Its totient is φ = 5420400.

The previous prime is 5555929. The next prime is 5555983. The reversal of 5555951 is 1595555.

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

It is a cyclic number.

It is not a de Polignac number, because 5555951 - 2¹⁸ = 5293807 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551951) 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, 67715 + ... + 67796.

It is an arithmetic number, because the mean of its divisors is an integer number (1422876).

Almost surely, 2^5555951 is an apocalyptic number.

5555951 is a deficient number, since it is larger than the sum of its proper divisors (135553).

5555951 is a wasteful number, since it uses less digits than its factorization.

5555951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135552.

The product of its digits is 28125, while the sum is 35.

The square root of 5555951 is about 2357.1064888969. The cubic root of 5555951 is about 177.1139636550.

The spelling of 5555951 in words is "five million, five hundred fifty-five thousand, nine hundred fifty-one".