2604533251 has 4 divisors (see below), whose sum is σ = 2606989104. Its totient is φ = 2602077400.

The previous prime is 2604533249. The next prime is 2604533273. The reversal of 2604533251 is 1523354062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1523354062 = 2 ⋅761677031.

It is a cyclic number.

It is not a de Polignac number, because 2604533251 - 2¹ = 2604533249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2604533221) 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, 1226335 + ... + 1228456.

It is an arithmetic number, because the mean of its divisors is an integer number (651747276).

Almost surely, 2^2604533251 is an apocalyptic number.

2604533251 is a deficient number, since it is larger than the sum of its proper divisors (2455853).

2604533251 is a wasteful number, since it uses less digits than its factorization.

2604533251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455852.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2604533251 is about 51034.6279598470. The cubic root of 2604533251 is about 1375.8675738665.

The spelling of 2604533251 in words is "two billion, six hundred four million, five hundred thirty-three thousand, two hundred fifty-one".