53761531 has 4 divisors (see below), whose sum is σ = 56923992. Its totient is φ = 50599072.

The previous prime is 53761493. The next prime is 53761541. The reversal of 53761531 is 13516735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13516735 = 5 ⋅2703347.

It is not a de Polignac number, because 53761531 - 2¹³ = 53753339 is a prime.

It is a super-2 number, since 2×53761531² = 5780604430927922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53761493 and 53761502.

It is not an unprimeable number, because it can be changed into a prime (53761541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1581205 + ... + 1581238.

It is an arithmetic number, because the mean of its divisors is an integer number (14230998).

Almost surely, 2^53761531 is an apocalyptic number.

53761531 is a deficient number, since it is larger than the sum of its proper divisors (3162461).

53761531 is a wasteful number, since it uses less digits than its factorization.

53761531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162460.

The product of its digits is 9450, while the sum is 31.

The square root of 53761531 is about 7332.2255148079. The cubic root of 53761531 is about 377.4191011242.

The spelling of 53761531 in words is "fifty-three million, seven hundred sixty-one thousand, five hundred thirty-one".