51552438 has 32 divisors (see below), whose sum is σ = 118046976. Its totient is φ = 14702688.

The previous prime is 51552437. The next prime is 51552439. The reversal of 51552438 is 83425515.

It is an interprime number because it is at equal distance from previous prime (51552437) and next prime (51552439).

It is a junction number, because it is equal to n+sod(n) for n = 51552399 and 51552408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51552437) 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 15 ways as a sum of consecutive naturals, for example, 45345 + ... + 46467.

It is an arithmetic number, because the mean of its divisors is an integer number (3688968).

Almost surely, 2^51552438 is an apocalyptic number.

51552438 is an abundant number, since it is smaller than the sum of its proper divisors (66494538).

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

51552438 is a wasteful number, since it uses less digits than its factorization.

51552438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228.

The product of its digits is 24000, while the sum is 33.

The square root of 51552438 is about 7180.0026462391. The cubic root of 51552438 is about 372.1771759782.

The spelling of 51552438 in words is "fifty-one million, five hundred fifty-two thousand, four hundred thirty-eight".