151602421 has 2 divisors, whose sum is σ = 151602422. Its totient is φ = 151602420.

The previous prime is 151602383. The next prime is 151602427. The reversal of 151602421 is 124206151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115132900 + 36469521 = 10730^2 + 6039^2 .

It is a cyclic number.

It is not a de Polignac number, because 151602421 - 2⁷ = 151602293 is a prime.

It is a super-2 number, since 2×151602421² = 45966588106122482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151602392 and 151602401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151602427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75801210 + 75801211.

It is an arithmetic number, because the mean of its divisors is an integer number (75801211).

Almost surely, 2^151602421 is an apocalyptic number.

It is an amenable number.

151602421 is a deficient number, since it is larger than the sum of its proper divisors (1).

151602421 is an equidigital number, since it uses as much as digits as its factorization.

151602421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 151602421 is about 12312.6934908654. The cubic root of 151602421 is about 533.2146162411.

Adding to 151602421 its reverse (124206151), we get a palindrome (275808572).

The spelling of 151602421 in words is "one hundred fifty-one million, six hundred two thousand, four hundred twenty-one".