51548231 has 4 divisors (see below), whose sum is σ = 58912272. Its totient is φ = 44184192.

The previous prime is 51548219. The next prime is 51548239. The reversal of 51548231 is 13284515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51548231 - 2²² = 47353927 is a prime.

It is a super-2 number, since 2×51548231² = 5314440238458722, 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 = 51548194 and 51548203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51548239) 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, 3682010 + ... + 3682023.

It is an arithmetic number, because the mean of its divisors is an integer number (14728068).

Almost surely, 2^51548231 is an apocalyptic number.

51548231 is a deficient number, since it is larger than the sum of its proper divisors (7364041).

51548231 is an equidigital number, since it uses as much as digits as its factorization.

51548231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364040.

The product of its digits is 4800, while the sum is 29.

The square root of 51548231 is about 7179.7096737960. The cubic root of 51548231 is about 372.1670517110.

The spelling of 51548231 in words is "fifty-one million, five hundred forty-eight thousand, two hundred thirty-one".