53501537 has 2 divisors, whose sum is σ = 53501538. Its totient is φ = 53501536.

The previous prime is 53501531. The next prime is 53501561. The reversal of 53501537 is 73510535.

53501537 is nontrivially palindromic in base 13.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38142976 + 15358561 = 6176^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 53501537 - 2¹⁶ = 53436001 is a prime.

It is a super-2 number, since 2×53501537² = 5724828922724738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53501531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26750768 + 26750769.

It is an arithmetic number, because the mean of its divisors is an integer number (26750769).

Almost surely, 2^53501537 is an apocalyptic number.

It is an amenable number.

53501537 is a deficient number, since it is larger than the sum of its proper divisors (1).

53501537 is an equidigital number, since it uses as much as digits as its factorization.

53501537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 53501537 is about 7314.4744855663. The cubic root of 53501537 is about 376.8097105524.

The spelling of 53501537 in words is "fifty-three million, five hundred one thousand, five hundred thirty-seven".