2906257 has 4 divisors (see below), whose sum is σ = 3032640. Its totient is φ = 2779876.

The previous prime is 2906231. The next prime is 2906261. The reversal of 2906257 is 7526092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2906257 - 2⁷ = 2906129 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2906207) 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, 63157 + ... + 63202.

It is an arithmetic number, because the mean of its divisors is an integer number (758160).

2^2906257 is an apocalyptic number.

It is an amenable number.

2906257 is a deficient number, since it is larger than the sum of its proper divisors (126383).

2906257 is a wasteful number, since it uses less digits than its factorization.

2906257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126382.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 2906257 is about 1704.7747651816. The cubic root of 2906257 is about 142.7068014091.

The spelling of 2906257 in words is "two million, nine hundred six thousand, two hundred fifty-seven".