61053631 has 4 divisors (see below), whose sum is σ = 64267000. Its totient is φ = 57840264.

The previous prime is 61053617. The next prime is 61053659. The reversal of 61053631 is 13635016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61053631 is a prime.

It is a super-2 number, since 2×61053631² = 7455091716568322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61053596 and 61053605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61053931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606656 + ... + 1606693.

It is an arithmetic number, because the mean of its divisors is an integer number (16066750).

Almost surely, 2^61053631 is an apocalyptic number.

61053631 is a deficient number, since it is larger than the sum of its proper divisors (3213369).

61053631 is a wasteful number, since it uses less digits than its factorization.

61053631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213368.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 61053631 is about 7813.6822945395. The cubic root of 61053631 is about 393.7650496977.

Adding to 61053631 its reverse (13635016), we get a palindrome (74688647).

The spelling of 61053631 in words is "sixty-one million, fifty-three thousand, six hundred thirty-one".