451261 has 4 divisors (see below), whose sum is σ = 453024. Its totient is φ = 449500.

The previous prime is 451249. The next prime is 451277. The reversal of 451261 is 162154.

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, and also an emirpimes, since its reverse is a distinct semiprime: 162154 = 2 ⋅81077.

It is a cyclic number.

It is not a de Polignac number, because 451261 - 2¹⁵ = 418493 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 (451201) 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, 415 + ... + 1036.

It is an arithmetic number, because the mean of its divisors is an integer number (113256).

2⁴⁵¹²⁶¹ is an apocalyptic number.

It is an amenable number.

451261 is a deficient number, since it is larger than the sum of its proper divisors (1763).

451261 is a wasteful number, since it uses less digits than its factorization.

451261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762.

The product of its digits is 240, while the sum is 19.

The square root of 451261 is about 671.7596296295. The cubic root of 451261 is about 76.7024554605.

It can be divided in two parts, 451 and 261, that multiplied together give a palindrome (117711).

The spelling of 451261 in words is "four hundred fifty-one thousand, two hundred sixty-one".