61145453 has 2 divisors, whose sum is σ = 61145454. Its totient is φ = 61145452.

The previous prime is 61145437. The next prime is 61145467. The reversal of 61145453 is 35454116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60248644 + 896809 = 7762^2 + 947^2 .

It is a cyclic number.

It is not a de Polignac number, because 61145453 - 2⁴ = 61145437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61142453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30572726 + 30572727.

It is an arithmetic number, because the mean of its divisors is an integer number (30572727).

Almost surely, 2^61145453 is an apocalyptic number.

It is an amenable number.

61145453 is a deficient number, since it is larger than the sum of its proper divisors (1).

61145453 is an equidigital number, since it uses as much as digits as its factorization.

61145453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 61145453 is about 7819.5558057987. Note that the first 3 decimals coincide. The cubic root of 61145453 is about 393.9623526432.

Adding to 61145453 its reverse (35454116), we get a palindrome (96599569).

It can be divided in two parts, 611 and 45453, that added together give a palindrome (46064).

The spelling of 61145453 in words is "sixty-one million, one hundred forty-five thousand, four hundred fifty-three".