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248611421 = 907274103
BaseRepresentation
bin11101101000110…
…00001001011101
3122022210202202102
432310120021131
51002121031141
640400334445
76106106432
oct1664301135
9568722672
10248611421
11118375493
126b314425
133c677666
1425037b89
1516c5c99b
hexed1825d

248611421 has 4 divisors (see below), whose sum is σ = 248886432. Its totient is φ = 248336412.

The previous prime is 248611411. The next prime is 248611469. The reversal of 248611421 is 124116842.

248611421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124116842 = 262058421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-248611421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248611411) 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, 136145 + ... + 137958.

It is an arithmetic number, because the mean of its divisors is an integer number (62221608).

Almost surely, 2248611421 is an apocalyptic number.

It is an amenable number.

248611421 is a deficient number, since it is larger than the sum of its proper divisors (275011).

248611421 is an equidigital number, since it uses as much as digits as its factorization.

248611421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275010.

The product of its digits is 3072, while the sum is 29.

The square root of 248611421 is about 15767.4164338994. The cubic root of 248611421 is about 628.7920255905.

The spelling of 248611421 in words is "two hundred forty-eight million, six hundred eleven thousand, four hundred twenty-one".

Divisors: 1 907 274103 248611421