245511442 has 8 divisors (see below), whose sum is σ = 401746032. Its totient is φ = 111596100.

The previous prime is 245511437. The next prime is 245511443. The reversal of 245511442 is 244115542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 245511442.

It is not an unprimeable number, because it can be changed into a prime (245511443) 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, 5579784 + ... + 5579827.

It is an arithmetic number, because the mean of its divisors is an integer number (50218254).

Almost surely, 2^245511442 is an apocalyptic number.

245511442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245511442 is a deficient number, since it is larger than the sum of its proper divisors (156234590).

245511442 is a wasteful number, since it uses less digits than its factorization.

245511442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11159624.

The product of its digits is 6400, while the sum is 28.

The square root of 245511442 is about 15668.8047406303. The cubic root of 245511442 is about 626.1675812880.

Adding to 245511442 its reverse (244115542), we get a palindrome (489626984).

The spelling of 245511442 in words is "two hundred forty-five million, five hundred eleven thousand, four hundred forty-two".