51496770 has 64 divisors (see below), whose sum is σ = 138910464. Its totient is φ = 12122880.

The previous prime is 51496759. The next prime is 51496771. The reversal of 51496770 is 7769415.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (51496771) 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 31 ways as a sum of consecutive naturals, for example, 6100 + ... + 11840.

It is an arithmetic number, because the mean of its divisors is an integer number (2170476).

Almost surely, 2^51496770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51496770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69455232).

51496770 is an abundant number, since it is smaller than the sum of its proper divisors (87413694).

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

51496770 is a wasteful number, since it uses less digits than its factorization.

51496770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5787.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 51496770 is about 7176.1249989113. The cubic root of 51496770 is about 372.0431647218.

The spelling of 51496770 in words is "fifty-one million, four hundred ninety-six thousand, seven hundred seventy".