61403 has 2 divisors, whose sum is σ = 61404. Its totient is φ = 61402.

The previous prime is 61381. The next prime is 61409. The reversal of 61403 is 30416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61403 - 2⁶ = 61339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30701 + 30702.

It is an arithmetic number, because the mean of its divisors is an integer number (30702).

2⁶¹⁴⁰³ is an apocalyptic number.

61403 is a deficient number, since it is larger than the sum of its proper divisors (1).

61403 is an equidigital number, since it uses as much as digits as its factorization.

61403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 61403 is about 247.7962873007. The cubic root of 61403 is about 39.4514706051.

Adding to 61403 its reverse (30416), we get a palindrome (91819).

It can be divided in two parts, 61 and 403, that added together give a palindrome (464).

The spelling of 61403 in words is "sixty-one thousand, four hundred three".