51026461 has 4 divisors (see below), whose sum is σ = 51043392. Its totient is φ = 51009532.

The previous prime is 51026429. The next prime is 51026477. The reversal of 51026461 is 16462015.

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: 16462015 = 5 ⋅3292403.

It is a cyclic number.

It is not a de Polignac number, because 51026461 - 2⁵ = 51026429 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 (51026411) 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, 2581 + ... + 10426.

It is an arithmetic number, because the mean of its divisors is an integer number (12760848).

Almost surely, 2^51026461 is an apocalyptic number.

It is an amenable number.

51026461 is a deficient number, since it is larger than the sum of its proper divisors (16931).

51026461 is a wasteful number, since it uses less digits than its factorization.

51026461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16930.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51026461 is about 7143.2808288629. The cubic root of 51026461 is about 370.9071022821.

Adding to 51026461 its reverse (16462015), we get a palindrome (67488476).

The spelling of 51026461 in words is "fifty-one million, twenty-six thousand, four hundred sixty-one".