51153770401 has 2 divisors, whose sum is σ = 51153770402. Its totient is φ = 51153770400.

The previous prime is 51153770383. The next prime is 51153770411. The reversal of 51153770401 is 10407735115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46829392801 + 4324377600 = 216401^2 + 65760^2 .

It is a cyclic number.

It is not a de Polignac number, because 51153770401 - 2¹⁹ = 51153246113 is a prime.

It is not a weakly prime, because it can be changed into another prime (51153770411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25576885200 + 25576885201.

It is an arithmetic number, because the mean of its divisors is an integer number (25576885201).

Almost surely, 2^51153770401 is an apocalyptic number.

It is an amenable number.

51153770401 is a deficient number, since it is larger than the sum of its proper divisors (1).

51153770401 is an equidigital number, since it uses as much as digits as its factorization.

51153770401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 51153770401 in words is "fifty-one billion, one hundred fifty-three million, seven hundred seventy thousand, four hundred one".