51455131 has 8 divisors (see below), whose sum is σ = 63329504. Its totient is φ = 40711680.

The previous prime is 51455119. The next prime is 51455143. The reversal of 51455131 is 13155415.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51455119) and next prime (51455143).

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 51455131 - 2⁹ = 51454619 is a prime.

It is a super-2 number, since 2×51455131² = 5295261012454322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51455096 and 51455105.

It is not an unprimeable number, because it can be changed into a prime (51455101) 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, 282630 + ... + 282811.

It is an arithmetic number, because the mean of its divisors is an integer number (7916188).

Almost surely, 2^51455131 is an apocalyptic number.

51455131 is a deficient number, since it is larger than the sum of its proper divisors (11874373).

51455131 is a wasteful number, since it uses less digits than its factorization.

51455131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565461.

The product of its digits is 1500, while the sum is 25.

The square root of 51455131 is about 7173.2231946315. The cubic root of 51455131 is about 371.9428627510.

The spelling of 51455131 in words is "fifty-one million, four hundred fifty-five thousand, one hundred thirty-one".