51051378 has 16 divisors (see below), whose sum is σ = 116688960. Its totient is φ = 14586096.

The previous prime is 51051373. The next prime is 51051383. The reversal of 51051378 is 87315015.

It is an interprime number because it is at equal distance from previous prime (51051373) and next prime (51051383).

It is not an unprimeable number, because it can be changed into a prime (51051373) 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, 607713 + ... + 607796.

It is an arithmetic number, because the mean of its divisors is an integer number (7293060).

Almost surely, 2^51051378 is an apocalyptic number.

51051378 is an abundant number, since it is smaller than the sum of its proper divisors (65637582).

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

51051378 is a wasteful number, since it uses less digits than its factorization.

51051378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215521.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 51051378 is about 7145.0247025465. The cubic root of 51051378 is about 370.9674656581.

The spelling of 51051378 in words is "fifty-one million, fifty-one thousand, three hundred seventy-eight".