53730531 has 12 divisors (see below), whose sum is σ = 78412152. Its totient is φ = 35450496.

The previous prime is 53730493. The next prime is 53730539. The reversal of 53730531 is 13503735.

It is not a de Polignac number, because 53730531 - 2¹⁴ = 53714147 is a prime.

It is a super-2 number, since 2×53730531² = 5773939923083922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53730495 and 53730504.

It is not an unprimeable number, because it can be changed into a prime (53730539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29901 + ... + 31646.

It is an arithmetic number, because the mean of its divisors is an integer number (6534346).

Almost surely, 2^53730531 is an apocalyptic number.

53730531 is a deficient number, since it is larger than the sum of its proper divisors (24681621).

53730531 is a wasteful number, since it uses less digits than its factorization.

53730531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61650 (or 61647 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The square root of 53730531 is about 7330.1112542717. Note that the first 3 decimals coincide. The cubic root of 53730531 is about 377.3465446484.

The spelling of 53730531 in words is "fifty-three million, seven hundred thirty thousand, five hundred thirty-one".