9261551 has 4 divisors (see below), whose sum is σ = 9973992. Its totient is φ = 8549112.

The previous prime is 9261547. The next prime is 9261557. The reversal of 9261551 is 1551629.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1551629 = 631 ⋅2459.

It is not a de Polignac number, because 9261551 - 2² = 9261547 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 (9261557) 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, 356201 + ... + 356226.

It is an arithmetic number, because the mean of its divisors is an integer number (2493498).

Almost surely, 2^9261551 is an apocalyptic number.

9261551 is a deficient number, since it is larger than the sum of its proper divisors (712441).

9261551 is a wasteful number, since it uses less digits than its factorization.

9261551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712440.

The product of its digits is 2700, while the sum is 29.

The square root of 9261551 is about 3043.2796453826. The cubic root of 9261551 is about 210.0041646944.

The spelling of 9261551 in words is "nine million, two hundred sixty-one thousand, five hundred fifty-one".