61494031 has 2 divisors, whose sum is σ = 61494032. Its totient is φ = 61494030.

The previous prime is 61493969. The next prime is 61494047. The reversal of 61494031 is 13049416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61494031 - 2⁷ = 61493903 is a prime.

It is a super-2 number, since 2×61494031² = 7563031697257922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61494091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30747015 + 30747016.

It is an arithmetic number, because the mean of its divisors is an integer number (30747016).

Almost surely, 2^61494031 is an apocalyptic number.

61494031 is a deficient number, since it is larger than the sum of its proper divisors (1).

61494031 is an equidigital number, since it uses as much as digits as its factorization.

61494031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 61494031 is about 7841.8129919044. The cubic root of 61494031 is about 394.7095680583.

The spelling of 61494031 in words is "sixty-one million, four hundred ninety-four thousand, thirty-one".