1545402051 has 32 divisors (see below), whose sum is σ = 2489705280. Its totient is φ = 943446528.

The previous prime is 1545402013. The next prime is 1545402097. The reversal of 1545402051 is 1502045451.

1545402051 is a `hidden beast` number, since 1 + 5 + 454 + 0 + 205 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1545402051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1545402151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28516 + ... + 62481.

It is an arithmetic number, because the mean of its divisors is an integer number (77803290).

Almost surely, 2^1545402051 is an apocalyptic number.

1545402051 is a deficient number, since it is larger than the sum of its proper divisors (944303229).

1545402051 is a wasteful number, since it uses less digits than its factorization.

1545402051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91060 (or 91054 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1545402051 is about 39311.6019897434. The cubic root of 1545402051 is about 1156.1490538178.

The spelling of 1545402051 in words is "one billion, five hundred forty-five million, four hundred two thousand, fifty-one".