151782401 has 4 divisors (see below), whose sum is σ = 152373252. Its totient is φ = 151191552.

The previous prime is 151782383. The next prime is 151782467. The reversal of 151782401 is 104287151.

It is a Cunningham number, because it is equal to 12320²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 149426176 + 2356225 = 12224^2 + 1535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151782401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151782101) 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, 295040 + ... + 295553.

It is an arithmetic number, because the mean of its divisors is an integer number (38093313).

Almost surely, 2^151782401 is an apocalyptic number.

It is an amenable number.

151782401 is a deficient number, since it is larger than the sum of its proper divisors (590851).

151782401 is an equidigital number, since it uses as much as digits as its factorization.

151782401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590850.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 151782401 is about 12320.0000405844. Note that the first 4 decimals coincide. The cubic root of 151782401 is about 533.4255407849.

The spelling of 151782401 in words is "one hundred fifty-one million, seven hundred eighty-two thousand, four hundred one".