51953551 has 16 divisors (see below), whose sum is σ = 58238208. Its totient is φ = 46022400.

The previous prime is 51953549. The next prime is 51953557. The reversal of 51953551 is 15535915.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51953551 - 2¹ = 51953549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51953557) 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, 54741 + ... + 55681.

It is an arithmetic number, because the mean of its divisors is an integer number (3639888).

Almost surely, 2^51953551 is an apocalyptic number.

51953551 is a deficient number, since it is larger than the sum of its proper divisors (6284657).

51953551 is a wasteful number, since it uses less digits than its factorization.

51953551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122.

The product of its digits is 16875, while the sum is 34.

The square root of 51953551 is about 7207.8811727164. The cubic root of 51953551 is about 373.1399470550.

The spelling of 51953551 in words is "fifty-one million, nine hundred fifty-three thousand, five hundred fifty-one".