1520155450 has 48 divisors (see below), whose sum is σ = 3088373760. Its totient is φ = 552096000.

The previous prime is 1520155447. The next prime is 1520155457. The reversal of 1520155450 is 545510251.

It is not an unprimeable number, because it can be changed into a prime (1520155457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702370 + ... + 704530.

It is an arithmetic number, because the mean of its divisors is an integer number (64341120).

Almost surely, 2^1520155450 is an apocalyptic number.

1520155450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1520155450 is an abundant number, since it is smaller than the sum of its proper divisors (1568218310).

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

1520155450 is a wasteful number, since it uses less digits than its factorization.

1520155450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3458 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1520155450 is about 38989.1709324525. The cubic root of 1520155450 is about 1149.8186103323.

The spelling of 1520155450 in words is "one billion, five hundred twenty million, one hundred fifty-five thousand, four hundred fifty".