49152421 has 2 divisors, whose sum is σ = 49152422. Its totient is φ = 49152420.

The previous prime is 49152407. The next prime is 49152427. The reversal of 49152421 is 12425194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49140100 + 12321 = 7010^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 49152421 - 2⁷ = 49152293 is a prime.

It is a super-2 number, since 2×49152421² = 4831920980322482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49152421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49152427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24576210 + 24576211.

It is an arithmetic number, because the mean of its divisors is an integer number (24576211).

Almost surely, 2^49152421 is an apocalyptic number.

It is an amenable number.

49152421 is a deficient number, since it is larger than the sum of its proper divisors (1).

49152421 is an equidigital number, since it uses as much as digits as its factorization.

49152421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 49152421 is about 7010.8787608972. The cubic root of 49152421 is about 366.3096034576.

The spelling of 49152421 in words is "forty-nine million, one hundred fifty-two thousand, four hundred twenty-one".