51438348 has 48 divisors (see below), whose sum is σ = 143620960. Its totient is φ = 15826752.

The previous prime is 51438347. The next prime is 51438349. The reversal of 51438348 is 84383415.

It is an interprime number because it is at equal distance from previous prime (51438347) and next prime (51438349).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51438347) 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, 16915 + ... + 19722.

Almost surely, 2^51438348 is an apocalyptic number.

It is an amenable number.

51438348 is an abundant number, since it is smaller than the sum of its proper divisors (92182612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51438348 is a wasteful number, since it uses less digits than its factorization.

51438348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36663 (or 36655 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 51438348 is about 7172.0532624905. The cubic root of 51438348 is about 371.9024197751.

The spelling of 51438348 in words is "fifty-one million, four hundred thirty-eight thousand, three hundred forty-eight".