51455101 has 2 divisors, whose sum is σ = 51455102. Its totient is φ = 51455100.

The previous prime is 51455087. The next prime is 51455119. The reversal of 51455101 is 10155415.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33051001 + 18404100 = 5749^2 + 4290^2 .

It is a cyclic number.

It is not a de Polignac number, because 51455101 - 2⁵ = 51455069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51455501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25727550 + 25727551.

It is an arithmetic number, because the mean of its divisors is an integer number (25727551).

Almost surely, 2^51455101 is an apocalyptic number.

It is an amenable number.

51455101 is a deficient number, since it is larger than the sum of its proper divisors (1).

51455101 is an equidigital number, since it uses as much as digits as its factorization.

51455101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 51455101 is about 7173.2211035211. The cubic root of 51455101 is about 371.9427904661.

The spelling of 51455101 in words is "fifty-one million, four hundred fifty-five thousand, one hundred one".