2251403506 has 8 divisors (see below), whose sum is σ = 3684114864. Its totient is φ = 1023365220.

The previous prime is 2251403477. The next prime is 2251403509. The reversal of 2251403506 is 6053041522.

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

It is not an unprimeable number, because it can be changed into a prime (2251403509) 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, 51168240 + ... + 51168283.

It is an arithmetic number, because the mean of its divisors is an integer number (460514358).

Almost surely, 2^2251403506 is an apocalyptic number.

2251403506 is a deficient number, since it is larger than the sum of its proper divisors (1432711358).

2251403506 is a wasteful number, since it uses less digits than its factorization.

2251403506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102336536.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2251403506 is about 47448.9568483860. The cubic root of 2251403506 is about 1310.6431016774.

The spelling of 2251403506 in words is "two billion, two hundred fifty-one million, four hundred three thousand, five hundred six".