2560551 has 8 divisors (see below), whose sum is σ = 3901824. Its totient is φ = 1463160.

The previous prime is 2560549. The next prime is 2560583. The reversal of 2560551 is 1550652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2560551 - 2¹ = 2560549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60945 + ... + 60986.

It is an arithmetic number, because the mean of its divisors is an integer number (487728).

2^2560551 is an apocalyptic number.

2560551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2560551 is a deficient number, since it is larger than the sum of its proper divisors (1341273).

2560551 is a wasteful number, since it uses less digits than its factorization.

2560551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121941.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2560551 is about 1600.1721782358. The cubic root of 2560551 is about 136.8078895795.

The spelling of 2560551 in words is "two million, five hundred sixty thousand, five hundred fifty-one".