51355701 has 20 divisors (see below), whose sum is σ = 77869792. Its totient is φ = 33722568.

The previous prime is 51355693. The next prime is 51355709. The reversal of 51355701 is 10755315.

It is an interprime number because it is at equal distance from previous prime (51355693) and next prime (51355709).

It is not a de Polignac number, because 51355701 - 2³ = 51355693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51355709) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 696 + ... + 10158.

Almost surely, 2^51355701 is an apocalyptic number.

It is an amenable number.

51355701 is a deficient number, since it is larger than the sum of its proper divisors (26514091).

51355701 is an equidigital number, since it uses as much as digits as its factorization.

51355701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9542 (or 9533 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 51355701 is about 7166.2892071141. The cubic root of 51355701 is about 371.7031320394.

The spelling of 51355701 in words is "fifty-one million, three hundred fifty-five thousand, seven hundred one".