1406655451 has 4 divisors (see below), whose sum is σ = 1413796032. Its totient is φ = 1399514872.

The previous prime is 1406655407. The next prime is 1406655461. The reversal of 1406655451 is 1545566041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1545566041 = 877 ⋅1762333.

It is a cyclic number.

It is not a de Polignac number, because 1406655451 - 2¹³ = 1406647259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1406655451.

It is not an unprimeable number, because it can be changed into a prime (1406655401) 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, 3569995 + ... + 3570388.

It is an arithmetic number, because the mean of its divisors is an integer number (353449008).

Almost surely, 2^1406655451 is an apocalyptic number.

1406655451 is a deficient number, since it is larger than the sum of its proper divisors (7140581).

1406655451 is an equidigital number, since it uses as much as digits as its factorization.

1406655451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140580.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 1406655451 is about 37505.4056237231. The cubic root of 1406655451 is about 1120.4588497764.

The spelling of 1406655451 in words is "one billion, four hundred six million, six hundred fifty-five thousand, four hundred fifty-one".