2145300451 has 16 divisors (see below), whose sum is σ = 2500533504. Its totient is φ = 1802327904.

The previous prime is 2145300407. The next prime is 2145300463. The reversal of 2145300451 is 1540035412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2145300451 - 2²¹ = 2143203299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145300481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473740 + ... + 478246.

It is an arithmetic number, because the mean of its divisors is an integer number (156283344).

Almost surely, 2^2145300451 is an apocalyptic number.

2145300451 is a deficient number, since it is larger than the sum of its proper divisors (355233053).

2145300451 is a wasteful number, since it uses less digits than its factorization.

2145300451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2145300451 is about 46317.3882143629. The cubic root of 2145300451 is about 1289.7218018761.

Adding to 2145300451 its reverse (1540035412), we get a palindrome (3685335863).

The spelling of 2145300451 in words is "two billion, one hundred forty-five million, three hundred thousand, four hundred fifty-one".