51155453 has 2 divisors, whose sum is σ = 51155454. Its totient is φ = 51155452.

The previous prime is 51155443. The next prime is 51155471. The reversal of 51155453 is 35455115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 23833924 = 5227^2 + 4882^2 .

It is a cyclic number.

It is not a de Polignac number, because 51155453 - 2¹² = 51151357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51155443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577726 + 25577727.

It is an arithmetic number, because the mean of its divisors is an integer number (25577727).

Almost surely, 2^51155453 is an apocalyptic number.

It is an amenable number.

51155453 is a deficient number, since it is larger than the sum of its proper divisors (1).

51155453 is an equidigital number, since it uses as much as digits as its factorization.

51155453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7500, while the sum is 29.

The square root of 51155453 is about 7152.3040343654. The cubic root of 51155453 is about 371.2193833277.

The spelling of 51155453 in words is "fifty-one million, one hundred fifty-five thousand, four hundred fifty-three".