61544053 has 2 divisors, whose sum is σ = 61544054. Its totient is φ = 61544052.

The previous prime is 61544027. The next prime is 61544089. The reversal of 61544053 is 35044516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61496964 + 47089 = 7842^2 + 217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61544053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61544453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772026 + 30772027.

It is an arithmetic number, because the mean of its divisors is an integer number (30772027).

Almost surely, 2^61544053 is an apocalyptic number.

It is an amenable number.

61544053 is a deficient number, since it is larger than the sum of its proper divisors (1).

61544053 is an equidigital number, since it uses as much as digits as its factorization.

61544053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 61544053 is about 7845.0017845760. The cubic root of 61544053 is about 394.8165638676.

Subtracting from 61544053 its sum of digits (28), we obtain a square (61544025 = 7845²).

Adding to 61544053 its reverse (35044516), we get a palindrome (96588569).

The spelling of 61544053 in words is "sixty-one million, five hundred forty-four thousand, fifty-three".