61480457 has 2 divisors, whose sum is σ = 61480458. Its totient is φ = 61480456.

The previous prime is 61480439. The next prime is 61480459. The reversal of 61480457 is 75408416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 3171961 = 7636^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 61480457 - 2⁸ = 61480201 is a prime.

Together with 61480459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61480459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30740228 + 30740229.

It is an arithmetic number, because the mean of its divisors is an integer number (30740229).

Almost surely, 2^61480457 is an apocalyptic number.

It is an amenable number.

61480457 is a deficient number, since it is larger than the sum of its proper divisors (1).

61480457 is an equidigital number, since it uses as much as digits as its factorization.

61480457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 61480457 is about 7840.9474555056. The cubic root of 61480457 is about 394.6805236028.

The spelling of 61480457 in words is "sixty-one million, four hundred eighty thousand, four hundred fifty-seven".