61951403 has 2 divisors, whose sum is σ = 61951404. Its totient is φ = 61951402.

The previous prime is 61951367. The next prime is 61951441. The reversal of 61951403 is 30415916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61951403 - 2¹⁰ = 61950379 is a prime.

It is not a weakly prime, because it can be changed into another prime (61951493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30975701 + 30975702.

It is an arithmetic number, because the mean of its divisors is an integer number (30975702).

Almost surely, 2^61951403 is an apocalyptic number.

61951403 is a deficient number, since it is larger than the sum of its proper divisors (1).

61951403 is an equidigital number, since it uses as much as digits as its factorization.

61951403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61951403 is about 7870.9213564868. The cubic root of 61951403 is about 395.6857244442.

The spelling of 61951403 in words is "sixty-one million, nine hundred fifty-one thousand, four hundred three".