2951551 has 4 divisors (see below), whose sum is σ = 2995672. Its totient is φ = 2907432.

The previous prime is 2951539. The next prime is 2951569. The reversal of 2951551 is 1551592.

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 2951551 - 2⁷ = 2951423 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 (2951051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21960 + ... + 22093.

It is an arithmetic number, because the mean of its divisors is an integer number (748918).

2^2951551 is an apocalyptic number.

2951551 is a deficient number, since it is larger than the sum of its proper divisors (44121).

2951551 is an equidigital number, since it uses as much as digits as its factorization.

2951551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44120.

The product of its digits is 2250, while the sum is 28.

The square root of 2951551 is about 1718.0078579564. The cubic root of 2951551 is about 143.4443446230. Note that the first 3 decimals are identical.

The spelling of 2951551 in words is "two million, nine hundred fifty-one thousand, five hundred fifty-one".