51280455 has 16 divisors (see below), whose sum is σ = 85616640. Its totient is φ = 26160288.

The previous prime is 51280451. The next prime is 51280459. The reversal of 51280455 is 55408215.

It is an interprime number because it is at equal distance from previous prime (51280451) and next prime (51280459).

It is not a de Polignac number, because 51280455 - 2² = 51280451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51280451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73975 + ... + 74664.

It is an arithmetic number, because the mean of its divisors is an integer number (5351040).

Almost surely, 2^51280455 is an apocalyptic number.

51280455 is a deficient number, since it is larger than the sum of its proper divisors (34336185).

51280455 is a wasteful number, since it uses less digits than its factorization.

51280455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148670.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 51280455 is about 7161.0372851983. The cubic root of 51280455 is about 371.5215043945.

The spelling of 51280455 in words is "fifty-one million, two hundred eighty thousand, four hundred fifty-five".