245430551 has 4 divisors (see below), whose sum is σ = 251416704. Its totient is φ = 239444400.

The previous prime is 245430533. The next prime is 245430557. The reversal of 245430551 is 155034542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245430551 - 2⁶ = 245430487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245430557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2993015 + ... + 2993096.

It is an arithmetic number, because the mean of its divisors is an integer number (62854176).

Almost surely, 2^245430551 is an apocalyptic number.

245430551 is a deficient number, since it is larger than the sum of its proper divisors (5986153).

245430551 is an equidigital number, since it uses as much as digits as its factorization.

245430551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5986152.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 245430551 is about 15666.2232525903. The cubic root of 245430551 is about 626.0988039291.

The spelling of 245430551 in words is "two hundred forty-five million, four hundred thirty thousand, five hundred fifty-one".