51099537 has 16 divisors (see below), whose sum is σ = 73549440. Its totient is φ = 31460352.

The previous prime is 51099497. The next prime is 51099539. The reversal of 51099537 is 73599015.

It is not a de Polignac number, because 51099537 - 2⁷ = 51099409 is a prime.

It is a super-2 number, since 2×51099537² = 5222325363228738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51099495 and 51099504.

It is not an unprimeable number, because it can be changed into a prime (51099539) 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, 10768 + ... + 14769.

It is an arithmetic number, because the mean of its divisors is an integer number (4596840).

Almost surely, 2^51099537 is an apocalyptic number.

It is an amenable number.

51099537 is a deficient number, since it is larger than the sum of its proper divisors (22449903).

51099537 is a wasteful number, since it uses less digits than its factorization.

51099537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25592.

The product of its (nonzero) digits is 42525, while the sum is 39.

The square root of 51099537 is about 7148.3940154415. The cubic root of 51099537 is about 371.0840789477.

The spelling of 51099537 in words is "fifty-one million, ninety-nine thousand, five hundred thirty-seven".