51551248 has 40 divisors (see below), whose sum is σ = 114520448. Its totient is φ = 22021632.

The previous prime is 51551243. The next prime is 51551261. The reversal of 51551248 is 84215515.

It is not an unprimeable number, because it can be changed into a prime (51551243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47965 + ... + 49027.

Almost surely, 2^51551248 is an apocalyptic number.

It is an amenable number.

51551248 is an abundant number, since it is smaller than the sum of its proper divisors (62969200).

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

51551248 is a wasteful number, since it uses less digits than its factorization.

51551248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511 (or 1505 counting only the distinct ones).

The product of its digits is 8000, while the sum is 31.

The square root of 51551248 is about 7179.9197767106. The cubic root of 51551248 is about 372.1743122647.

The spelling of 51551248 in words is "fifty-one million, five hundred fifty-one thousand, two hundred forty-eight".