56251501 has 2 divisors, whose sum is σ = 56251502. Its totient is φ = 56251500.

The previous prime is 56251477. The next prime is 56251519. The reversal of 56251501 is 10515265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29975625 + 26275876 = 5475^2 + 5126^2 .

It is a cyclic number.

It is not a de Polignac number, because 56251501 - 2¹³ = 56243309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56251541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28125750 + 28125751.

It is an arithmetic number, because the mean of its divisors is an integer number (28125751).

Almost surely, 2^56251501 is an apocalyptic number.

It is an amenable number.

56251501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56251501 is an equidigital number, since it uses as much as digits as its factorization.

56251501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 56251501 is about 7500.1000659991. The cubic root of 56251501 is about 383.1581242567.

Adding to 56251501 its reverse (10515265), we get a palindrome (66766766).

The spelling of 56251501 in words is "fifty-six million, two hundred fifty-one thousand, five hundred one".