61400351 has 2 divisors, whose sum is σ = 61400352. Its totient is φ = 61400350.

The previous prime is 61400347. The next prime is 61400357. The reversal of 61400351 is 15300416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61400351 - 2² = 61400347 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61400357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30700175 + 30700176.

It is an arithmetic number, because the mean of its divisors is an integer number (30700176).

Almost surely, 2^61400351 is an apocalyptic number.

61400351 is a deficient number, since it is larger than the sum of its proper divisors (1).

61400351 is an equidigital number, since it uses as much as digits as its factorization.

61400351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 61400351 is about 7835.8376067910. The cubic root of 61400351 is about 394.5090326879.

Adding to 61400351 its reverse (15300416), we get a palindrome (76700767).

The spelling of 61400351 in words is "sixty-one million, four hundred thousand, three hundred fifty-one".