51901347 has 16 divisors (see below), whose sum is σ = 71702528. Its totient is φ = 33359040.

The previous prime is 51901309. The next prime is 51901361. The reversal of 51901347 is 74310915.

It is not a de Polignac number, because 51901347 - 2⁷ = 51901219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51901747) 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, 28218 + ... + 30000.

It is an arithmetic number, because the mean of its divisors is an integer number (4481408).

Almost surely, 2^51901347 is an apocalyptic number.

51901347 is a deficient number, since it is larger than the sum of its proper divisors (19801181).

51901347 is a wasteful number, since it uses less digits than its factorization.

51901347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 51901347 is about 7204.2589487053. The cubic root of 51901347 is about 373.0149255983.

The spelling of 51901347 in words is "fifty-one million, nine hundred one thousand, three hundred forty-seven".