61453541 has 6 divisors (see below), whose sum is σ = 61943526. Its totient is φ = 60967400.

The previous prime is 61453537. The next prime is 61453549. The reversal of 61453541 is 14535416.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59737441 + 1716100 = 7729^2 + 1310^2 .

It is not a de Polignac number, because 61453541 - 2² = 61453537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61453549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15371 + ... + 18951.

It is an arithmetic number, because the mean of its divisors is an integer number (10323921).

Almost surely, 2^61453541 is an apocalyptic number.

It is an amenable number.

61453541 is a deficient number, since it is larger than the sum of its proper divisors (489985).

61453541 is an equidigital number, since it uses as much as digits as its factorization.

61453541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843 (or 3712 counting only the distinct ones).

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

The square root of 61453541 is about 7839.2308933976. The cubic root of 61453541 is about 394.6229184594.

Adding to 61453541 its reverse (14535416), we get a palindrome (75988957).

The spelling of 61453541 in words is "sixty-one million, four hundred fifty-three thousand, five hundred forty-one".