1244496551 has 6 divisors (see below), whose sum is σ = 1268423520. Its totient is φ = 1221012728.

The previous prime is 1244496527. The next prime is 1244496569. The reversal of 1244496551 is 1556944421.

It is a de Polignac number, because none of the positive numbers 2^k-1244496551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244496499 and 1244496508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244496521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218711 + ... + 224328.

It is an arithmetic number, because the mean of its divisors is an integer number (211403920).

Almost surely, 2^1244496551 is an apocalyptic number.

1244496551 is a deficient number, since it is larger than the sum of its proper divisors (23926969).

1244496551 is an frugal number, since it uses more digits than its factorization.

1244496551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443145 (or 443092 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 1244496551 is about 35277.4226808025. The cubic root of 1244496551 is about 1075.6341096776.

The spelling of 1244496551 in words is "one billion, two hundred forty-four million, four hundred ninety-six thousand, five hundred fifty-one".