51501536 has 12 divisors (see below), whose sum is σ = 101393712. Its totient is φ = 25750752.

The previous prime is 51501503. The next prime is 51501539. The reversal of 51501536 is 63510515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51501539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804680 + ... + 804743.

It is an arithmetic number, because the mean of its divisors is an integer number (8449476).

Almost surely, 2^51501536 is an apocalyptic number.

It is an amenable number.

51501536 is a deficient number, since it is larger than the sum of its proper divisors (49892176).

51501536 is a wasteful number, since it uses less digits than its factorization.

51501536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609433 (or 1609425 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 51501536 is about 7176.4570645967. The cubic root of 51501536 is about 372.0546418366.

The spelling of 51501536 in words is "fifty-one million, five hundred one thousand, five hundred thirty-six".