1254224551 has 4 divisors (see below), whose sum is σ = 1254780072. Its totient is φ = 1253669032.

The previous prime is 1254224501. The next prime is 1254224581. The reversal of 1254224551 is 1554224521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1554224521 = 29 ⋅53593949.

It is a cyclic number.

It is not a de Polignac number, because 1254224551 - 2²¹ = 1252127399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254224501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274360 + ... + 278893.

It is an arithmetic number, because the mean of its divisors is an integer number (313695018).

Almost surely, 2^1254224551 is an apocalyptic number.

1254224551 is a deficient number, since it is larger than the sum of its proper divisors (555521).

1254224551 is an equidigital number, since it uses as much as digits as its factorization.

1254224551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555520.

The product of its digits is 16000, while the sum is 31.

The square root of 1254224551 is about 35415.0328391772. The cubic root of 1254224551 is about 1078.4295163684.

The spelling of 1254224551 in words is "one billion, two hundred fifty-four million, two hundred twenty-four thousand, five hundred fifty-one".