51353487 has 8 divisors (see below), whose sum is σ = 76079280. Its totient is φ = 34235640.

The previous prime is 51353459. The next prime is 51353507. The reversal of 51353487 is 78435315.

It is not a de Polignac number, because 51353487 - 2⁷ = 51353359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51353417) 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, 950964 + ... + 951017.

It is an arithmetic number, because the mean of its divisors is an integer number (9509910).

Almost surely, 2^51353487 is an apocalyptic number.

51353487 is a deficient number, since it is larger than the sum of its proper divisors (24725793).

51353487 is a wasteful number, since it uses less digits than its factorization.

51353487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901990 (or 1901984 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51353487 is about 7166.1347321970. The cubic root of 51353487 is about 371.6977904542.

The spelling of 51353487 in words is "fifty-one million, three hundred fifty-three thousand, four hundred eighty-seven".