2251554457 has 2 divisors, whose sum is σ = 2251554458. Its totient is φ = 2251554456.

The previous prime is 2251554439. The next prime is 2251554463. The reversal of 2251554457 is 7544551522.

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., 1131380496 + 1120173961 = 33636^2 + 33469^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251554457 - 2²³ = 2243165849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2251554757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125777228 + 1125777229.

It is an arithmetic number, because the mean of its divisors is an integer number (1125777229).

Almost surely, 2^2251554457 is an apocalyptic number.

It is an amenable number.

2251554457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251554457 is an equidigital number, since it uses as much as digits as its factorization.

2251554457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280000, while the sum is 40.

The square root of 2251554457 is about 47450.5474889384. The cubic root of 2251554457 is about 1310.6723928084.

The spelling of 2251554457 in words is "two billion, two hundred fifty-one million, five hundred fifty-four thousand, four hundred fifty-seven".