51454631 has 8 divisors (see below), whose sum is σ = 55810944. Its totient is φ = 47246080.

The previous prime is 51454621. The next prime is 51454633. The reversal of 51454631 is 13645415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51454631 - 2⁶ = 51454567 is a prime.

It is a super-2 number, since 2×51454631² = 5295158102692322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51454594 and 51454603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51454633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36215 + ... + 37608.

It is an arithmetic number, because the mean of its divisors is an integer number (6976368).

Almost surely, 2^51454631 is an apocalyptic number.

51454631 is a deficient number, since it is larger than the sum of its proper divisors (4356313).

51454631 is a wasteful number, since it uses less digits than its factorization.

51454631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73881.

The product of its digits is 7200, while the sum is 29.

The square root of 51454631 is about 7173.1883427107. The cubic root of 51454631 is about 371.9416579989.

The spelling of 51454631 in words is "fifty-one million, four hundred fifty-four thousand, six hundred thirty-one".