1551054340 has 48 divisors (see below), whose sum is σ = 3587875200. Its totient is φ = 558535680.

The previous prime is 1551054317. The next prime is 1551054361. The reversal of 1551054340 is 434501551.

It is a junction number, because it is equal to n+sod(n) for n = 1551054299 and 1551054308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11565 + ... + 56884.

It is an arithmetic number, because the mean of its divisors is an integer number (74747400).

Almost surely, 2^1551054340 is an apocalyptic number.

1551054340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551054340 is an abundant number, since it is smaller than the sum of its proper divisors (2036820860).

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

1551054340 is a wasteful number, since it uses less digits than its factorization.

1551054340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68572 (or 68570 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1551054340 is about 39383.4272251667. The cubic root of 1551054340 is about 1157.5568725001.

Adding to 1551054340 its reverse (434501551), we get a palindrome (1985555891).

The spelling of 1551054340 in words is "one billion, five hundred fifty-one million, fifty-four thousand, three hundred forty".