53351487 has 64 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 28374624.

The previous prime is 53351483. The next prime is 53351489. The reversal of 53351487 is 78415335.

It is not a de Polignac number, because 53351487 - 2² = 53351483 is a prime.

It is a super-2 number, since 2×53351487² = 5692762330222338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53351483) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 297964 + ... + 298142.

It is an arithmetic number, because the mean of its divisors is an integer number (1512000).

Almost surely, 2^53351487 is an apocalyptic number.

53351487 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

53351487 is a deficient number, since it is larger than the sum of its proper divisors (43416513).

53351487 is a wasteful number, since it uses less digits than its factorization.

53351487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 291 counting only the distinct ones).

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

The square root of 53351487 is about 7304.2102242474. The cubic root of 53351487 is about 376.4571148436.

The spelling of 53351487 in words is "fifty-three million, three hundred fifty-one thousand, four hundred eighty-seven".