5156551 has 2 divisors, whose sum is σ = 5156552. Its totient is φ = 5156550.

The previous prime is 5156549. The next prime is 5156561. The reversal of 5156551 is 1556515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5156551 - 2¹ = 5156549 is a prime.

Together with 5156549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5156561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578275 + 2578276.

It is an arithmetic number, because the mean of its divisors is an integer number (2578276).

Almost surely, 2^5156551 is an apocalyptic number.

5156551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156551 is an equidigital number, since it uses as much as digits as its factorization.

5156551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3750, while the sum is 28.

The square root of 5156551 is about 2270.8040426246. The cubic root of 5156551 is about 172.7639423615.

The spelling of 5156551 in words is "five million, one hundred fifty-six thousand, five hundred fifty-one".