1551761456 has 40 divisors (see below), whose sum is σ = 3444972960. Its totient is φ = 663312384.

The previous prime is 1551761441. The next prime is 1551761459. The reversal of 1551761456 is 6541671551.

It is not an unprimeable number, because it can be changed into a prime (1551761459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25760 + ... + 61376.

It is an arithmetic number, because the mean of its divisors is an integer number (86124324).

Almost surely, 2^1551761456 is an apocalyptic number.

1551761456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1551761456 is an abundant number, since it is smaller than the sum of its proper divisors (1893211504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551761456 is a wasteful number, since it uses less digits than its factorization.

1551761456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36021 (or 36015 counting only the distinct ones).

The product of its digits is 126000, while the sum is 41.

The square root of 1551761456 is about 39392.4035316455. The cubic root of 1551761456 is about 1157.7327534280.

The spelling of 1551761456 in words is "one billion, five hundred fifty-one million, seven hundred sixty-one thousand, four hundred fifty-six".