61356403 has 4 divisors (see below), whose sum is σ = 61372080. Its totient is φ = 61340728.

The previous prime is 61356359. The next prime is 61356413. The reversal of 61356403 is 30465316.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61356403 - 2⁹ = 61355891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61356413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3501 + ... + 11617.

It is an arithmetic number, because the mean of its divisors is an integer number (15343020).

Almost surely, 2^61356403 is an apocalyptic number.

61356403 is a deficient number, since it is larger than the sum of its proper divisors (15677).

61356403 is an equidigital number, since it uses as much as digits as its factorization.

61356403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 61356403 is about 7833.0328098381. The cubic root of 61356403 is about 394.4148854454.

The spelling of 61356403 in words is "sixty-one million, three hundred fifty-six thousand, four hundred three".