61545203 has 2 divisors, whose sum is σ = 61545204. Its totient is φ = 61545202.

The previous prime is 61545193. The next prime is 61545227. The reversal of 61545203 is 30254516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61545203 - 2⁶ = 61545139 is a prime.

It is a super-2 number, since 2×61545203² = 7575624024622418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61547203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772601 + 30772602.

It is an arithmetic number, because the mean of its divisors is an integer number (30772602).

Almost surely, 2^61545203 is an apocalyptic number.

61545203 is a deficient number, since it is larger than the sum of its proper divisors (1).

61545203 is an equidigital number, since it uses as much as digits as its factorization.

61545203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 61545203 is about 7845.0750793093. The cubic root of 61545203 is about 394.8190230070.

Adding to 61545203 its reverse (30254516), we get a palindrome (91799719).

The spelling of 61545203 in words is "sixty-one million, five hundred forty-five thousand, two hundred three".